When Iranian Students Occupied the American Embassy and Held Americans

When Iranian students occupied the American embassy and held Americans hostage,

A) moderates in the government were able to better argue their case for improving relations with the United States.
B) Iran was able to win policy concessions from the United States.
C) Khomeini used the crisis to install his hard-line supporters in nearly all positions of authority.
D) the United States organized anti-Khomeini groups in Iraq.
E) Khomeini used the crisis as an opportunity to soften his hard-line policies.