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: Nick asked Christopher how to focus a camera, since _ had never been able to get the hang of that. (A) Nick (B) Christopher

A: A
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Q: Ian wants to melt almond bark and asks Michael for an advice, because _ has a lot of experience. (A) Ian (B) Michael

A: B
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Q: Because of the fact that Maria performed more physical exercises than Amy did, _ was in worse shape overall. (A) Maria (B) Amy

A:
B
****