TASK DEFINITION: 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.
PROBLEM: Sentence: The ranger and the rustler both were riding horses that galloped at the same speed.  The rustler left an hour before the ranger. Question: Who has traveled further? (A) the ranger (B) the rustler

SOLUTION: the rustler

PROBLEM: Sentence: The old bookcase held all of Ted's heavy textbooks with no problem, but the stylish new shelves his wife bought when she remodeled the house snapped under the weight in a day. Question: Which bookshelf was made of thinner wood? (A) The new bookshelf had thinner wood (B) The old bookshelf had thinner wood

SOLUTION: The new bookshelf had thinner wood

PROBLEM: Sentence: Two football players are doing some running after practice. The lineman is not nearly as fast as the running back. Question: Which player will cover less ground if they each run until a whistle blows? (A) the running back (B) the lineman

SOLUTION:
the lineman