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: A valley is significantly rougher than a mountainside. Question: This means that lava rolling down which surface will reach a greater top speed? (A) mountainside (B) valley
[A]: valley


[Q]: Sentence: A 45 year-old woman and a 21 year-old baseball player are throwing baseballs in the field. They have to go get each ball that they throw. Question: Who will have to walk the  shortest distance to get their balls? (A) The 21-year old (B) The 45 year-old
[A]: The 45 year-old


[Q]: Sentence: Saturn has greater mass than the Moon of Earth. Question: On which one would you experience stronger gravity? (A) Saturn (B) the Moon
[A]:
Saturn