Which of the following statements is INCORRECT？A．Stock markets in Europe and America have

Which of the following statements is INCORRECT？

A．Stock markets in Europe and America have dropped considerably.

B．There may be a wider financial crisis in case of Greek default.

C．A further round of selling has been under way.

D．Portugal has seen credit rating downgraded.

请帮忙给出正确答案和分析，谢谢！