___ are the highest rate that can be charged, which is often, but not always, the rate that is charged.

___ are the highest rate that can be charged, which is often, but not always, the rate that is charged.

___ are the highest rate that can be charged, which is often, but not always, the rate that is charged. 









A. Ad valorem tariff rates

B. Tariff rents

C. Specific tariff rates

D. Bound tariff rates












Answer: D