Which of the Following Is True of the Specificity Rule

Which of the following is true of the specificity rule?

A) The specificity rule suggests that tariffs should be imposed only on specific products.
B) According to the specificity rule, government policy should target as closely as possible the source of the distortion that separates private and social benefits (or costs) .
C) The specificity rule posits that tariff imposed on a good favors only the interests of a specific group within a country.
D) According to the specificity rule, only specific industries should be allowed to participate in government lobbying.