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 Q]: The lady's vacuum worked a lot better on the carpet than the broom, because the _ was powerful. (A) vacuum (B) broom
[EX A]: A

[EX Q]: 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
[EX A]: B

[EX Q]: Jill poured the brownie mix from the cup into the pan until the _ was full. (A) pan (B) cup
[EX A]:
A