问题如下：
Which of the following statement is incorrect?
I. The short seller will usually have to pay dividends of theborrowed shares while the position is open.
II. Short selling is profitable if the asset price declines butincurs losses if the asset price increases.
III. If the lender requires or when the short position is closed out,
investors must return the securities.
选项：
A.I.
B.II.
C.III.
D.None of I, II and III.
解释：
The short seller will usually have to pay dividends of the borrowed shares while the position is open.
Short selling is profitable if the asset price declines butincurs losses if the asset price increases.
If the lender requires or when the short position is closed out,investors must return the securities.
All of the statements are correct.
第二个命题是不是不太严谨，如果在这个过程中支付了红利，那么下降的收益应该大于红利才能获利。
