问题如下：
Which of the following statement is correct?
I.The short selling is the sale of an asset that is not ownedwith the intention of buying it back later.
II.Short selling is profitable if the asset price increases.
III.Short selling incurs losses if the asset price declines.
选项：
A.I, II
B.II, III
C.I, III
D.I
解释：
Short selling is profitable if the asset price declines but incurs losses if the asset price increases, so only statement I is correct.
老师您好，麻烦解释一下第一个的含义，short sell 之后不是还要买回来还给别人吗？
