问题如下：
An investor adopting the sector rotation strategy is most likely:
选项：
A.invests in a pre-selected group of sectors on a rotating basis.
B.makes regular investments.
C.make time investment to take advantage of business-cycle conditions.
解释：
C is correct.
An investor adopting the sector rotation strategy would make time investment in industries through an analysis of fundamentals and/or business-cycle conditions.
sector rotation strategy 是什么意思？
