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 teacher of Nick was a lot smarter than Robert's teacher, because _ teacher has several degrees. (A) Nick (B) Robert
[EX A]: A

[EX Q]: As it was Mother's Day Carrie picked a flower for their mum but Katrina did not because _ was very affectionate. (A) Carrie (B) Katrina
[EX A]: A

[EX Q]: Elena asked for health advice from Jessica, since _ had gotten the mumps twice before. (A) Elena (B) Jessica
[EX A]:
B