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 bits of sand in clam chowder bothered Justin, but it didn't bother Brian because _ didn't understand that the sand means that it's fresh. (A) Justin (B) Brian
[EX A]: A

[EX Q]: Yvonne preferred to draw a train instead of a house, because drawing the _ was simple. (A) train (B) house
[EX A]: A

[EX Q]: The plants in the yard died because Maria forgot to water them after being asked by Sarah. _ felt guilty. (A) Maria (B) Sarah
[EX A]:
A