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: Jim and Ben both had old cars that they loved to take out for drives on Sundays. Ben's car had a small motor and so it wasn't as fast as Jim's car. Question: Assuming they didn't have to worry about speed limits or other traffic, which of their cars could travel for 50 miles in the least amount of minutes? (A) Ben's car (B) Jim's car
Ben's car