What is the difference between 'temporary measures' and 'permanent measures' in tariff law?

What is the difference between 'temporary measures' and 'permanent measures' in tariff law?

• A. Temporary measures are interim actions during investigations; permanent measures are final duties or remedies enacted after findings.
• B. Temporary measures are permanent; permanent measures are temporary.
• C. There is no difference; they are the same.
• D. Temporary measures apply only to certain products; permanent measures apply to all products.

Answer: (A)