What Was the Military-Industrial Complex That U

What was the military-industrial complex that U.S.president Dwight Eisenhower warned about?

A) A geographical concentration of weapons productions facilities that made the facilities vulnerable to attack.
B) The collusion between military leaders and weapons builders that promoted a more aggressive foreign policy.
C) The difficulty of demobilizing the military effort at the end of World War II.
D) The superiority of Soviet weapons that put the United States at risk.
E) A secret weapons manufacturing plant in the closed Soviet city of Magadan.