Nike Shoes Are Sold at Retailers Such as Foot Locker,Dick's

Nike shoes are sold at retailers such as Foot Locker,Dick's Sporting Goods,and Sports Authority,but they are not sold in Wal-Mart or Target.What is Nike most likely trying to accomplish with this strategy?

A) monitor marketing channel intermediaries
B) create and preserve referent power
C) establish legitimate power
D) use coercive techniques
E) manage risk