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]: Rachel wanted to change the way things worked unlike Rebecca because _ was unmotivated to complete it. (A) Rachel (B) Rebecca
[EX A]: B

[EX Q]: Aaron went to go on a vacation to Hawaii without Joel because _ was busy with work. (A) Aaron (B) Joel
[EX A]: B

[EX Q]: So _ was happy because William had managed to steal a valuable painting from the house of Christopher. (A) William (B) Christopher
[EX A]:
A