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: Rubbing your finger across a trackpad is very easy, but rubbing it across a piece of sandpaper results in high friction. Question: Which surface will let you rub your finger a greater distance? (A) trackpad (B) sandpaper

Ex Output:
A


Ex Input:
Sentence: Michael and Daphne leave the train station at the same time and begin walking home along the same route. Michael decides to stop at a friend's house along the way, while Daphne continues walking. Question: Who would end up going the smaller distance from the train station? (A) Michael (B) Daphne

Ex Output:
A


Ex Input:
Sentence: Sliding a stake across the carpet results in less friction then sliding it across the drapes. Question: Which surface will force the stake to travel slower? (A) carpet (B) drapes

Ex Output:

B