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: A 45 year-old woman and a 21 year-old baseball player are throwing baseballs in the field. They have to go get each ball that they throw. Question: Who will have to walk the  shortest distance to get their balls? (A) The 21-year old (B) The 45 year-old

SOLUTION: The 45 year-old

PROBLEM: Sentence: Lane is testing how strong gravity pulls on different objects. She drops a brick and a penny from a roof at the same time. Question: Which has larger mass and hits the ground first? (A) brick (B) penny

SOLUTION: brick

PROBLEM: Sentence: A hollow cannonball and a solid cannonball made of the same material and diameter are shot with the same force from a cannon. Question: Which ball will have a lower acceleration? (A) Hollow cannonball (B) Solid cannonball

SOLUTION:
Solid cannonball