问题详情

ThedebateovertheEU"ssinglecurrencyisstuckbecausethedominantpowers______.
A．arecompetingfortheleadingposition
B．arebusyhandlingtheirowncrises
C．failtoreachanagreementonharmonization
D．disagreeonthestepstowardsdisintegration

请帮忙给出正确答案和分析，谢谢！