Detailed Instructions: 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: Janet is rolling marbles down a marble counter. Two marbles are rolled together; one blue, one yellow. The blue marble goes further. Question: Which marble traveled longer? (A) blue marble (B) yellow marble
Solution:
blue marble