原版书L3 V3 P394 第12题 investment, function, currency, increase, standard

soddy1979

为什么下面两句话正确：
1. The contribution of currency risk to portfolio standard deviation decreases as a function of the investment horizon.
2. Correlations among country return increase when markets become more volatile.

DarienHacker

这个问题我明明回答过，谁把我回复删了？