You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the correct answer (return the string of the correct option, not 'A' or 'B') for the given question.

[EX Q]: Sentence: A model car rolling across a desk is experiencing more friction then one rolling across a display case. Question: Which surface will give the model car a rougher ride? (A) display case (B) desk
[EX A]: desk

[EX Q]: Sentence: Paul has taken a job in a warehouse. Paul stacks boxes onto a pallet. Later, Paul sits down in the break room. Question: In which situation will Paul's shirt be more wet from perspiration? (A) When he's stacking boxes (B) When he's sitting down
[EX A]: When he's stacking boxes

[EX Q]: Sentence: A bag of trash blows a little ways across the parking lot. Then it reaches a sidewalk. The bag blows all the way away from the building. Question: Which is less bumpy? (A) parking lot (B) sidewalk
[EX A]:
sidewalk