Answer:
Option D.
Step-by-step explanation:
Saigon, is the right answer.
The Iron Triangle was a 120 square miles stretch in the Bình Dương Region of Vietnam. During the French war in Vietnam and throughout the involvement of America in the Vietnam War, this region was in the occupation of the Viet Minh. Notwithstanding combined attempts on the portion of the United States and South Vietnamese armies to destabilize the province as a power station for their opponent, the communist North Vietnamese funded and conducted South Vietnamese revolutionary action, the Viet Cong.