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: 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 A]: The new bookshelf had thinner wood

[EX Q]: Sentence: An ice cube sliding across a fridge shelf experiences more resistance then one sliding across a freezer shelf. Question: Which shelf will let the ice cube go faster? (A) fridge shelf (B) freezer shelf
[EX A]: freezer shelf

[EX Q]: Sentence: Brett is driving a truck around a dirt track. The dirt track has more friction than when Brett drives the same truck on the road. Question: What will make more heat? (A) the truck on the road (B) the truck on the dirt track
[EX A]:
the truck on the dirt track