During the Korean War, General MacArthur was able to take the city of Inchon by A. striking in an area far away from where the fighting had been concentrated.
B. tricking North Korea into believing he that would use nuclear weapons.
C. convincing China to enter the war on the side of South Korea.
D. launching a surprise attack from deep within North Korean territory.

A. striking in an area far away from where the fighting had been concentrated.

Explanation:

By striking an area far away from the main battle grounds, General MacArthur managed to positioned his troops in a different area that didn't really guarded by the enemy.

After conquering this area, the troops pushed the attacks from behind the enemy line. This made the enemy become suffocated because they're attacked from two different sides. In the end, the enemy's army became uncoordinated and eventually lead to their loss.

Striking in an area far away from where the fighting had been concentrated.

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