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: James found out the water floating on the pot after he watered it with a can. He should have known the _ is too small. (A) water (B) pot
Example Output: B

Example Input: Eric worked in the electronics section at Walmart and Ian asked him a question so _ showed him where the WIFI routers were. (A) Eric (B) Ian
Example Output:
A