Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Sentence: Todd landed on Mercury as part of an historic mission. He saw that Mercury had a very small fraction of the mass of Earth. Question: On which planet will Todd feel less gravitational force? (A) Earth (B) Mercury
Student:
Mercury