可以解释一下答案吗 谢谢

问题如下：

A portfolio manager decides to temporarily invest more of a portfolio in equities than the investment policy statement prescribes because he expects equities will generate a higher return than other asset classes. This decision is most likely an example of: (mock)

选项：

A.rebalancing.

B.tactical asset allocation.

C.strategic asset allocation.

解释：

Tactical asset allocation is the decision to deliberately deviate from the policy exposures to systematic risk factors with the intent to add value based on forecasts of the near-term returns of those asset classes.