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 Input:
Sentence: Tom and Jim are brothers. Tom is thirteen and Jim is six. Tom is much bigger. They go out to throw rocks at the lake. Question: Who can throw them farther? (A) Tom (B) Jim

Ex Output:
Tom

Ex Input:
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

Ex Output:
coffee table

Ex Input:
Sentence: Fred has thicker arms then Jimbo. Question: If both throw a stone, which will make the stone go a greater distance? (A) Jimbo (B) Fred

Ex Output:
Fred