In the cold northlands of the Vikings, a child named Sigurd is born. Even before he has come into the world, his father, the king, dies in battle against Odin, one of the gods of the Vikings. Sigurd then becomes the stepson of the new king. When Sigurd is young, the king sends him to live with one of his stepfather’s barons, Regin. Regin is a dwarf, a race of magical creatures who live underground and always want more gold than they can get. One day in the stables, Regin says, "Sigurd, you are the son of the first king; you are strong. Take your inheritance by force, and you will be king."
Sigurd says, "But the king is kind to me. He gives me whatever I ask."
Regin laughs at Sigurd. He asks, "If this is true, then where is your horse? You cannot be a knight without a horse."
Sigurd says, "It will be easy to get a horse. I will show you." So he sets out to find one.
While selecting a horse to buy, Sigurd is approached by an old man.
"You are Sigurd, son of the king; you must choose this great white stallion. He will never fail you."
Sigurd listens to the old man and picks the horse named Grani, a magical steed. After Sigurd leaves with Grani, the old man reveals himself to be none other than Odin. He has disguised himself so that he could help Sigurd without the young warrior's knowledge.
When Sigurd returns with a magical horse, Regin is furious. Regin devises a plan to rid himself of Sigurd. He tells Sigurd, "This proves nothing. Anyone can buy a horse. Kill the dragon Fafnir and all will know of your valor. And you will have riches beyond any other king."
In order to slay Fafnir, Sigurd asks Regin to make him a wondrous sword. When Regin hands him the sword, Sigurd tests it by striking the anvil on which it was made. The sword breaks, so Sigurd asks for another. The second sword also breaks. Sigurd then asks Regin to make him a sword from the broken pieces of the first two. When Sigurd tests the third sword, it slices through the anvil cleanly.
With his sword, his magical steed, and his strength and wisdom, Sigurd gathers his courage and enters battle against Fafnir. Odin, disguised as the old man, appears before Sigurd and says, "You cannot face him head on; you will be slain. Dig a hole. If you do this, you will defeat him easily."
Once again, Sigurd listens to the old man. When the hole is dug, Sigurd hides in it and yells out a challenge to Fafnir. The dragon comes charging. The ground trembles under the fearsome beast, but Sigurd does not run. When the dragon is over the hole, Sigurd strikes and slays Fafnir with one blow. After his victory, some of the dragon’s power spills into Sigurd. The hero becomes even stronger and goes on to accomplish even greater deeds so that his legend still lives on many years later.

Which sentence from the passage best shows Sigurd's wisdom?
A.
When Regin hands him the sword, Sigurd tests it by striking the anvil on which it was made.
B.
When Sigurd is young, he is sent to live with one of his step-father's barons, Regin.
C.
Sigurd says, "But the king is kind to me. He gives me whatever I ask."
D.
"You are strong. Take your inheritance by force and you will be king."