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".

Craig was never going to be as good a dentist as Kyle because _ is fascinated by teeth. (A) Craig (B) Kyle
B

Sarah took their bird to Rachel at the vet office, but _ thought their bird was acting normally. (A) Sarah (B) Rachel
B

Matthew is a public health expert, Justin is not therefore _ would be better at explaining the dangers of mold. (A) Matthew (B) Justin
A