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: Suppose you look into the sky. Question: Which star is easier to see? (A) Sirius (B) Capella

Ex Output:
A


Ex Input:
Sentence: A penguin is forced to swim at a low rate of speed through icy water, but can swim rather quickly through clear water. Question: Which water is the most rough? (A) icy water (B) clear water

Ex Output:
A


Ex Input:
Sentence: A cannon and a rifle each shoot a cannonball and a bullet towards the target. Question: Which projectile would be slower? (A) Bullet (B) Cannonball

Ex Output:

B