Why Did Eisenhower Send 1,000 Paratroopers to Little Rock, Arkansas

Why did Eisenhower send 1,000 paratroopers to Little Rock, Arkansas, in 1957?

A) to ensure that black students could attend a desegregated school
B) to quell a violent race riot resulting from the desegregation of the military
C) to investigate a planned terrorist attack from the Soviet Union
D) to protect a top secret chemical weapon on its way to Washington, DC
E) to arrest hundreds of alleged segregationist activists and supporters