You are the chief official in designing US trade policy. You wish to erect non-tariff trade barriers to Greek wine entering this country. This is politically sensitive given Greece's financial condition. Which strategy is the "sneakiest" and least likely to be made a political issue by angry Greek politicians? a. Political "jaw boning" by US officials with Greek politicians. b. A quota on bottles entering into the US. c. Use of special licenses and fees for importing wine. d. Hidden or extra "red tape" in the importing process that causes delays