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]: Derrick filled the bucket with water so that Joel could clean the car, because _ didn't want to do it. (A) Derrick (B) Joel
[A]: A

[Q]: Kenny used the bleach rather than the soap to remove the stains off the shirt. The _ was more concentrated. (A) bleach (B) soap
[A]: A

[Q]: The healthy man thanked Logan but not Robert because _ helped him change his life and become healthier. (A) Logan (B) Robert
[A]:
A