问题详情

Whydidthedollarrallyatthebeginningoftheyear？
A．Itwasthebeginningoftheyear.
B．Traders"sentimentwaschanginggreatly.
C．PeoplethoughtthattheUSeconomywouldrecoverandGermaninterestratewouldeasesoon.
D．ThepresentUS-Germaninterestratedifferentialwouldbeunlikelytonarrow.

请帮忙给出正确答案和分析，谢谢！