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: While fixing the window, Carrie had to take off Emily's screen because _ was hired too. (A) Carrie (B) Emily
Example Output: A

Example Input: The beefed up doorman let patrons that were on his list into the club until the _ was full. (A) club (B) list
Example Output: A

Example Input: We picked up surplus wood pallets for cheap. We wanted to re-purpose them as shelves or a tree house. Necessity won and we built the _ . (A) tree house (B) shelves
Example Output:
B