问题如下：
A country wants to promote International trade development, which of the following policies will not have a good effect?
选项：
A.Reduce tariffs on imports.
B.Floating currency is forbidden.
C.Reduce quotas on imports.
解释：
B is correct.
考点：Convergence Hypotheses, Rationales to Provide Incentives to Private Investment, Expected Impact of Removing Trade Barriers
解析：A选项和C选项减少关税及配额都是促进一国国际贸易的措施。但是B选项禁止浮动汇率政策却会阻碍一国国际贸易的发展。因为浮动汇率制度能使得该国贸易活动更加市场化。而固定汇率制度则容易引起因本币过度贬值诱发的贸易摩擦。
老师你好，请问下本题的答案中解释固定汇率容易引起本币贬值而导致贸易摩擦，请问可以解释一下这点么？谢谢。
