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.

Q: Sentence: Mike knows that his tank is really slow and that his car is pretty fast. Question: Which vehicle would take longer to get him to work if he were to commute in it? (A) tank (B) car

A: tank
****
Q: Sentence: A post office counter is less bumpy then a coffee table. Question: Which surface will force a letter to move at a lower rate of speed when slid across it? (A) post office counter (B) coffee table

A: coffee table
****
Q: Sentence: Tim has to push an ice sculpture across the ballroom in order to get his restaurant ready for a wedding. He notices that it is easier to push the sculpture when he moves it across the polished ballroom floor than when he moves it across the rough cobblestone floor. Question: If Tim is trying to keep the ice sculpture from melting, which surface should he push it across in order to produce less heat? (A) ballroom floor (B) cobblestone floor

A:
ballroom floor
****