You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct option for the given question. Write down the answer index: 'A' or 'B'.

[EX Q]: Sentence: A billiard ball has a greater mass then a basketball. Question: Which ball has a stronger field of gravity? (A) billiard ball (B) basketball
[EX A]: A

[EX Q]: Sentence: Tom throws a rubber ball and an ice ball of equal diameter. Question: Which ball is least likely to break? (A) Rubber ball (B) Ice ball
[EX A]: A

[EX Q]: Sentence: Greg and Hank each plan a cross country journey. Greg takes a car. Hank wants to walk cross country. Question: Who crosses the country first? (A) Greg (B) Hank
[EX A]:
A