The most-favored-nation clause of the WTO agreement stipulates that . (LO7)

a) no member nation may impose a tariff on the goods of any other member nation

b) all member nations must offer all other member countries the same trade concessions as any member country

c) each member may designate another member as a favored nation, providing that nation with trade concessions

d) all member nations must sell their goods to other member nations at cost