Why Was the 1997-1998 Asian Financial Crisis a Surprise

Why was the 1997-1998 Asian financial crisis a surprise?

A) The East Asian countries suffering from the crisis had borrowed little international money before the crisis.
B) The East Asian countries suffering from the crisis blamed international investors for their problems.
C) The East Asian countries suffering from the crisis had been considered successful models of development.
D) The International Monetary Fund stepped in to assist the East Asian countries affected by the crisis.
E) Creditor countries,like the United States,refused to help out their Asian allies when the crisis occurred.