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 Input:
Sentence: Astronauts exploring the galaxy first land on a red planet and later land on a green planet. The red planet is larger in mass than the green planet. Question: On which of these planets will the astronauts feel a lower gravitational force? (A) the red planet (B) the green planet

Ex Output:
B


Ex Input:
Sentence: Tom and Jim are brothers.  Tom is thirteen and Jim is six.  Tom is much bigger.  They go out to throw rocks at the lake. Question: Who can throw them farther? (A) Tom (B) Jim

Ex Output:
A


Ex Input:
Sentence: A leaf skidding onto a dirty porch gets a lot hotter then one skidding onto a clean porch. Question: Which surface will allow the leaf to skid at a higher rate of speed? (A) dirty porch (B) clean porch

Ex Output:

B


