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]: Bob tried to fit his card into the slot, but the _ was too narrow. (A) card (B) slot
[EX A]: B

[EX Q]: Rachel wanted to get the tapestry but instead had to get the vase because the _ was too expensive. (A) tapestry (B) vase
[EX A]: A

[EX Q]: Kayla hated taking her shoes off at Sarah's house. _ worried that she had smelly feet. (A) Kayla (B) Sarah
[EX A]:
A