Instructions: 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.
Input: Sentence: A soccer ball has distinctly less mass then a planet. Question: Which item emits a weaker gravitational field? (A) planet (B) soccer ball
Output:
soccer ball