Which of the Following Interpretations About Wholesalers Is True

Which of the following interpretations about wholesalers is true?

A) Wholesalers engage in relationship marketing with manufacturers and retailers.
B) Given the nature of distribution, it is very unlikely a wholesaler would have exclusive distribution of a product in a specific region.
C) Wholesalers do not have to compete with other wholesalers because each wholesaler tends to specialize.
D) Wholesalers who carry competing products are more attractive to manufacturers than those that limit the number of products they carry because they are more experienced.