Which of the Following Is a Difference Between a Retailer

Which of the following is a difference between a retailer channel and a wholesaler channel?

A) A retailer channel is most common when the retailer is large and can buy in large quantities,while a wholesaler channel is commonly used for low-cost items that are frequently purchased.
B) A retailer channel must be organized and managed as a group,while a wholesaler channel must be managed individually.
C) A retailer channel helps differentiate a firm's final product from the competition,while a wholesaler channel does not.
D) A retailer channel enables a retailer to use another manufacturer's already-established product,while a wholesaler channel does not.