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 could run twice as fast as his sister Jen. They had to deliver some urgent vaccines to the next town to stop the spread of a dangerous virus. Question: Who should run with the vaccines in order to get them there in a shorter amount of time? (A) Jim (B) Jen
Jim