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]: Joe stacked the paperback books above the blue binders, so the _ were on the top. (A) books (B) binders
[EX A]: A

[EX Q]: rhododendrons are easy to prune but  roses are not because the _ are very ill natured. (A) rhododendrons (B) roses
[EX A]: B

[EX Q]: Aaron went to a college and met Adam who is very smart, _ got help from him to study calculusinfinitesimal calculus. (A) Aaron (B) Adam
[EX A]:
A