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.
Q: Sentence: Two trolleys are running on parallel tracks. They both go in the same distance for 40 minutes. The trolley on the left hasn't gone as far as the trolley on the right. Question: Which one had the higher velocity? (A) the one on the left track (B) the one on the right track
A:
the one on the right track