instruction:
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.
question:
Sentence: A pebble sinks smoothly into a pond, but not into an ocean. Question: Which surface will the pebble plunge deeper into? (A) pond (B) ocean
answer:
pond


question:
Sentence: Thrusting a throwing star into yogurt heats it up less then thrusting it into jelly. Question: Which surface allows the throwing star to reach a higher top speed as it is thrust into it? (A) jelly (B) yogurt
answer:
yogurt


question:
Sentence: David and Joe live together and go out at the same time. David drove his car and Joe rode his skateboard. Question: After one hour, who traveled less distance? (A) David (B) Joe
answer:

Joe