题目内容：
回答题：
Why does the author choose to be "a buy-and-hold investor"?
[A] Because his employer prohibits him to trade equities on a short-term basis.
[B] Because he believes that long-term return will balance out short-term fluctuation.
[C] Because he is misguided by the loyalty to the idea of "buy and hold."
[D] Because he is an active investor and keeps an eye on stock markets every day.
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答案解析：