The rates of exchange are determined by market trading based on

The rates of exchange are determined by market trading based on specific currencies.The rate_________when demand is greater than supply and____when supply exceeds demand.
A、rises,rises
B、declines,declines
C、rises,declines
D、declines,rises
【正确答案】：C
【题目解析】：汇率是由以特定货币为基础的市场交易决定的。当需求大于供给时，利率上升，当供给大于需求时，利率下降。