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.

Sentence: Mike knows that his tank is really slow and that his car is pretty fast. Question: Which vehicle would take longer to get him to work if he were to commute in it? (A) tank (B) car
tank