单项选择题
A．Before rates were permitted to float
B．commercial, political and foreign exchange risks.
C．so marketers must be prepared to assume them or give up doing business in a particular market
D．Corporation can take some measure to avoid financial risks.
E．however, is competition
F．any other disagreement over which payment is withheld
G．to be especially aware of exchange-rate fluctuations and the need to compensate for them in their financial planning