Why Was Inchon Significant to the Korean War

Why was Inchon significant to the Korean War?

A) The North Koreans opened the war by seizing Inchon.
B) General Douglas MacArthur launched a daring amphibious assault at Inchon that forced North Korea's forces to retreat.
C) The United States detonated a nuclear bomb over Inchon to show the North Koreans how powerful the United States was.
D) Inchon housed a prison that became notorious for American prisoner of war abuse.
E) South Korea based its capitol at Inchon after the North Koreans captured Seoul.