Why Would Dwight Eisenhower Warn the American People About the Military-Industrial

Why would Dwight Eisenhower warn the American people about the military-industrial complex?

A) Strong links between the two removed civilian control over the military.
B) Such an alliance would push for a more aggressive foreign policy.
C) Americans would become immune to the rally effect if it was used too often.
D) American manufacturing was harmed by devoting such a large portion of the budget to the military.