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]: Though they had been hanging out together, Derrick came down with a fever while Samuel didn't. _ always had a strong immune system. (A) Derrick (B) Samuel
[EX A]: B

[EX Q]: Mary was totally loyal to Megan, so _ did anything they asked of them with no question. (A) Mary (B) Megan
[EX A]: A

[EX Q]: They wanted to play at the city park instead of their backyard, because the _ is more spacious. (A) city park (B) backyard
[EX A]:
A