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.
Input: Sentence: Alvin and Cameron are planning a trip to another state.  Alvin travels by plane, while Cameron takes a car.  They leave at the same time. Question: After two hours, who has traveled farther? (A) Alvin (B) Cameron
Output:
Alvin