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]: Aaron was always skipping leg day at the gym but Derrick never missed it. _ had very skinny legs. (A) Aaron (B) Derrick
[EX A]: A

[EX Q]: James found out the water floating on the pot after he watered it with a can. He should have known the _ is too small. (A) water (B) pot
[EX A]: B

[EX Q]: Elena stopped being friends with Katrina because _ was very selfish and never reciprocated the favors and help she was received. (A) Elena (B) Katrina
[EX A]:
B