At the Initial Stage of an International Marketing Campaign, Many

At the initial stage of an international marketing campaign, many American companies prefer to use an international ad agency based in the U.S. with foreign offices in other countries. This is because:

A) U.S.agencies are more creative than foreign agencies in terms of advertising concepts.
B) U.S.agencies understand world markets better than foreign agencies do.
C) U.S.-based agencies give an advertiser better control of the advertising process.
D) U.S.-based agencies generally understand local markets better than agencies located in these countries.
E) American culture is mostly used as a basis for understanding other cultures.