In 1979 the Shah of Iran was forced into exile. The U. S. government later allowed the Shah to enter the US for medical treatment. This perceived U. S. support for the Shah of Iran which resulted in which of the following?

A) Iran attacked a U. S. military base in Asia
B) Soviet forces began an occupation of Iran
C) Israel demanded U. S. support for the strategic bombings of cities in Iran
D) Iranian students captured a group of U. S. citizens in Iran