In this task, you are given a question containing a blank (_) and two options. You should pick the best option to answer the question. Please answer with "A" or "B".

Example Input: The medical exam for the broken arm was longer than the exam on the heart because the _ was a serious problem. (A) heart (B) arm
Example Output: B

Example Input: She chose to use a comb on her hair rather than a brush because the _ made her hair frizzy. (A) brush (B) comb
Example Output: A

Example Input: Monica wanted to dye her hair either red or brown. She chose the _ although it was bright. (A) red (B) brown
Example Output:
A