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 pharmacist said to store the medicine in a dark place because the _ would protect it from being exposed to light. (A) medicine (B) dark place
Example Output: B

Example Input: john poured the entire bag of gold into the treasure chest until the _ was empty. (A) chest (B) bag
Example Output: B

Example Input: Time to build some muscle, I really want to improve my arms and legs. I'll start with curls to work the _ . (A) arms (B) legs
Example Output:
A