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: A bucket sliding across wet sand stays cooler then one sliding across dry sand. Question: Which surface is providing less resistance to the bucket? (A) wet sand (B) dry sand

Ex Output:
A


Ex Input:
Sentence: The old bookcase held all of Ted's heavy textbooks with no problem, but the stylish new shelves his wife bought when she remodeled the house snapped under the weight in a day. Question: Which bookshelf was made of thinner wood? (A) The new bookshelf had thinner wood (B) The old bookshelf had thinner wood

Ex Output:
A


Ex Input:
Sentence: Mike knows that his tank weighs more than his bicycle. Question: Which vehicle will speed up slower? (A) bicycle (B) tank

Ex Output:

B