TASK DEFINITION: You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct answer (return the string of the correct option, not 'A' or 'B') for the given question.
PROBLEM: Sentence: Two bunnies, a white one and a black one, are hopping along together. The black bunny goes further than the white one. Question: Which bunny is faster? (A) white bunny (B) black bunny

SOLUTION: black bunny

PROBLEM: Sentence: Tim was cutting up cakes for the bake sale. It was harder for him to slice into the angel food cake than it was the chocolate cake. Question: Which cake is most likely to be thicker? (A) angel food cake (B) chocolate cake

SOLUTION: angel food cake

PROBLEM: Sentence: Two bunnies, a white one and a black one, are hopping along together. The black bunny goes further than the white one. Question: Which bunny is faster? (A) white bunny (B) black bunny

SOLUTION:
black bunny