题目内容：
回答题
According to the research of Yale and the University of Pittsburgh,
[A] there was a link between a company's success and the personality of its boss.
[B] There was no connection between a firm's success and its boss's personality.
[C] people could judge a professor's ability by watching short film-clips of lecturing.
[D] people could judge a professor's ability only after attending lectures for a full semester.
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