What is the difference between 'countervailing duties' and 'anti-dumping duties'?

What is the difference between 'countervailing duties' and 'anti-dumping duties'?

• A. Countervailing duties are the same as anti-dumping duties.
• B. Countervailing duties only apply to domestic subsidies; anti-dumping only to domestic markets.
• C. Countervailing duties counteract government subsidies on imported goods causing injury; anti-dumping duties address below-market pricing; both are remedies after injury and investigations.
• D. They are optional tools not based on injury findings.

Answer: (C)