I have a doubt on B.
The argument is talking about the performance over the last ten years, whereas option B is talking about current period. Currently students may need to pass a rigorous series of prerequisite exams, but does it meant that they needed to pass a rigorous series of prerequisite exams over the last ten years?
The argument is talking about the performance over the last ten years, whereas option B is talking about current period. Currently students may need to pass a rigorous series of prerequisite exams, but does it meant that they needed to pass a rigorous series of prerequisite exams over the last ten years?
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