问题如下：
Interest rates in a currency XXX increase and interest rates in currency YYY stay the same. The exchange rate is expressed as XXXYYY. Do forward rates increase or decrease?
选项：
解释：
Currency XXX becomes weaker in the forward market. Exchange rates are expressed as the number of units of YYY that would be exchanged for one unit of XXX. As a result of the increase in interest rates, it takes less units of YYY to buy one unit of XXX in the forward market and so the forward rate decreases.
请问：按照XXX的利率上升，不是应该有更多的资金从YYY换到XXX，投资到XXX上，造成XXX升值吗？那是不是Forward rate也会增加？没太明白这个题目的考点,请老师解释一下
