If a government uses barriers to foreign products such as biases against a foreign company’s bids or product standards that go against a foreign company’s product features the government is using ?

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If a government uses barriers to foreign products such as biases against a foreign company’s bids or product standards that go against a foreign company’s product features the government is using ?

A. Protectionism
B. exchange controls
C. exchange facilitators
D. nontariff trade barriers