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 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]: Emily had wicked allergies every spring when the trees started blooming but Samantha was unaffected. _ had runny nasal passages the whole season. (A) Emily (B) Samantha
[EX A]: A

[EX Q]: The cook was making salad and needed more oil and not more vinegar because the _ was plentiful. (A) oil (B) vinegar
[EX A]:
B