Why is determining the selling price in the global marketplace an extremely difficult task? a. many countries still have rules governing the competitive marketplace, including those that affect pricing. b.the major challenge is identifying the elements that need to be adapted to be effective in the global marketplace. c. distribution can be challenging in some countries if the transportation infrastructure is inadequate. d. differences in language, customs, and culture also complicate marketers' ability to communicate with customers in various countries. e. the number of firms with which the seller needs to deal to get its merchandise to the consumer determines the complexity of a channel