1. From a ledge on a rock wall, George climbs 30 feet. From there, he climbs -30 feet. What conclusion can you draw?
A. He is back on the ledge because 30 + (-30) = 0.
B. He is below the ledge because -30 feet represents going down.
C. He is above the ledge because he started by going up 30 feet.
D. He can be either above or below because the size of the ledge is unknown.

Show your work plz

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