问题如下：
A return distribution of skilled managers that is highly distinct from the return distribution of unskilled managers, most likely implies a:
选项：
A.highly efficient market.
low opportunity cost of not hiring a skilled manager.
high opportunity cost of not hiring a skilled manager.
解释：
C is correct.
When the two distributions are highly distinct, the unskilled managers are expected to significantly underperform the skilled managers, implying a high opportunity cost of not hiring the skilled managers. Efficient markets are likely to exhibit smaller differences of returns between skilled and unskilled managers.
没有雇佣到一个有能力的基金经理的机会成本不是很低吗？ 因为影响不大，有很多人有能力，就意味着错过一个也不太影响，为啥B不对？
