You are given a sentence, a question and two answer options. Your task is to write down the index ('A' or 'B') of the **incorrect** option for the given question.

Example Input: Sentence: A piece of toast heats up less when slid across a counter then when slid across a cutting board. Question: Which is the rougher surface? (A) cutting board (B) counter
Example Output: B

Example Input: Sentence: A segway can travel a much greater distance inside a shopping mall before needing a recharge then when it is cruising around outside on the street. Question: Which surface is rougher? (A) shopping mall (B) street
Example Output: A

Example Input: Sentence: A glove sliding across a card table experiences a lower increase in temperature then one sliding across a coffee table. Question: Which table has a surface that is less bumpy? (A) coffee table (B) card table
Example Output:
A