问题如下：
Which alternative investments usually use derivatives?
选项：
A.Real estate.
B.Commodities.
C.Collectibles.
解释：
B is correct.
Commodity investments may involve investing in actual physical commodities or in producers of commodities, but more typically, these investments are made using commodity derivatives.
老师，这三个答案好像都对，应该都有相关衍生品？
