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]: Michael was able to get the stains out of the sofa, unlike Hunter, because _ used a professional service. (A) Michael (B) Hunter
[EX A]: A

[EX Q]: Lindsey made a sword for Emily to use in combat because _ was a smith. (A) Lindsey (B) Emily
[EX A]: A

[EX Q]: The horse had stiff legs so its owner called the vet, who worried it had stifles. The vet was right and it was the _ . (A) legs (B) stifles
[EX A]:
B