You are given a sentence, a question and two answer options ('A' and 'B'). Your task is to find the **incorrect** answer (return the string of the incorrect option, not A/B).

Example Input: Sentence: Due to its much weaker gravity, astronaut Kevin is thrilled to discover that he can jump much higher on the moon than he ever could when on Earth. Question: Judging from Kevin's exploits, which of the following is true? (A) Earth has less mass (B) The moon has less mass
Example Output: Earth has less mass

Example Input: Sentence: Mary and Billy are at the beach skipping rocks.  Billy works out everyday, but Mary is weaker. Question: Who can throw the rocks farther? (A) Mary (B) Billy
Example Output: Mary

Example Input: Sentence: A martial arts expert wants to demonstrate the force of his hands by striking a couple of boards. When stacked next to each other the white board is twice as tall as the red board. Question: Which board will be more difficult for the expert to break? (A) white board (B) red board
Example Output:
red board