instruction:
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".
question:
Sarah was constantly feeling dizzy but not Betty because _ did not have symptoms of vertigo. (A) Sarah (B) Betty
answer:
B

question:
Aaron had a good relationship with their family but Jeffrey didn't. _ visited their parents quite rarely. (A) Aaron (B) Jeffrey
answer:
B

question:
Rebecca was a better manager than Christine because _ always tried to develop a flimsy plan. (A) Rebecca (B) Christine
answer:
B