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: Tony and Alex are riding motorcycles across the country.  Tony rides until early afternoon, but Alex rides until nightfall. Question: Who rode farther? (A) Tony (B) Alex
A:
Alex