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: Major Tom, an astronaut, used to jump up and down on Earth, and he never got higher than a meter in the air.  When his ship landed on Ceres, he jumped up and kept going and going higher and higher. Question: Why? (A) Earth has greater mass (B) Ceres has greater mass

SOLUTION: Earth has greater mass

PROBLEM: Sentence: John swings two baseball bats at a concrete fence. One bat is made of plastic and the other is made of clay. Question: Which bat is more likely to break? (A) Plastic baseball bat (B) Clay baseball bat

SOLUTION: Clay baseball bat

PROBLEM: Sentence: Mike's bike weighs more then his skates. Question: Which object will accelerate slower? (A) bike (B) skates

SOLUTION:
bike