The U.S has granted China permanent most favored nation treatment (normal trade relations) This means that the tariff schedules which apply to U.S imports from china ?

A. have tariff rates equal to zero suggesting a free trade policy for the United States
B. have lower tariff rates than the rates that apply to any other country sending goods to the United States
C. have tariff rates that are identical to the rates that apply to other countries to which the U.S grants most-favored nation treatment
D. have lower tariff rates than the rates that apply to other countries to which the U.S grants most favored nation treatment