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".

[Q]: Aaron went to pick up Michael, who needed a ride to the airport, and _ was very grateful. (A) Aaron (B) Michael
[A]: B


[Q]: Leslie was able to jump to the top of the wall while leaving Brian behind because _ is tall. (A) Leslie (B) Brian
[A]: A


[Q]: The man wanted to put the luggage in the house but the _ was too small. (A) house (B) luggage
[A]:
A