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".

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

Ex Output:
B


Ex Input:
Michael was able to get the stains out of the sofa, unlike Hunter, because _ used a professional service. (A) Michael (B) Hunter

Ex Output:
A


Ex Input:
I bought a new fish tank, but it didn't fit in the room because the _ was so small. (A) tank (B) room

Ex Output:

B