What Is a Benefit of Having Strong Relations with a Vendor

What is a benefit of having strong relations with a vendor?

A) Vendors supply complementary merchandise to their most profitable supporters.
B) Strong relations mean better profits for shareholders.
C) It is easier to return to a solid relationship with a vendor when private-labels fail.
D) A retailer could receive popular merchandise in short supply.
E) Vendors determine which retailers will receive the better prices.