What Is the National Security Argument to Support Protection from International

What is the national security argument to support protection from international trade?

A) Any firm necessary in wartime must be protected.
B) Domestic firms must be protected until they gain a comparative advantage.
C) Foreigners selling products in the economy limit the nation's diversity and stability.
D) Domestic jobs must be protected from competition from low-paid foreign workers.
E) Foreign producers selling below cost to drive domestic firms bankrupt must be stopped.