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]: The doctor replaced her chair with a yoga ball over the summer time, the _ was old. (A) chair (B) yoga ball
[EX A]: A

[EX Q]: Mark liked drawing so he took art classes instead of music lessons because the _ he would know what to expect. (A) art classes (B) music lessons
[EX A]: A

[EX Q]: To maintain high performance we used the reliable turbine rather than the old engine as the _ was efficient. (A) turbine (B) engine
[EX A]:
A