习题中给出的答案解释如下
Differences in GDP growth rates between countries may exist but this is not an important consideration specific to estimating required rate of return between the two countries. Both exchange rates and model issues in emerging markets are important
considerations that concern analysts estimating required returns in a global context.
GDP growth, exchange rate 以及 model issues 三者分别怎么样影响 required rate of return ?
多谢解答！