Which of the Following Statements About Channels of Distribution Is

Which of the following statements about channels of distribution is most accurate?

A) Channels of distribution always include retailers,but they may or may not also include wholesalers.
B) Some channels of distribution include marketing intermediaries,while in others a manufacturer sells directly to the final consumer.
C) Channels of distribution always begin with a manufacturer and end with consumers,and always have one or more marketing intermediaries in between.
D) The fewer the marketing intermediaries in a channel of distribution,the more efficient the channel is likely to be.