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]: Brian didn't want to dissect the cow brain with Benjamin, because _ thought they could find a better lab partner. (A) Brian (B) Benjamin
[EX A]: A

[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]: The amusement for the evening was provided by Monica rather than Jennifer , as _ was a bad entertainer. (A) Monica (B) Jennifer
[EX A]:
B