Task: Question Answering
Input (English): The forelimb of the monkey, bat, penguin, and alligator look very different on the outside, but their skeletal structures are similar. This evidence suggests that these animals  
 (A) may have evolved from a common ancestor. (B) all reproduce in a similar fashion. (C) live in similar environments. (D) should all be able to fly someday.
Output (English): A