Frogs, lizards, and birds all have a similar arrangement of bones in their limbs. Both their arms and legs have one bone at the top, two bones at the bottom, little bones and then fingers or toes. What does the similarity of the bone structure suggest about these animals?
(AKS 4d)
O A. They move in the same way.
OB. They have a common ancestor.
OC. They evolved at the same time.
D. They are comparable in size as adults.