Why Do Department Stores Organize Some of Their Private Label

Why do department stores organize some of their private label products near national brands?

A) Vendors require department stores to merchandise their products this way.
B) It is only ethical for retailers to balance their assortment with both national and private label merchandise.
C) National brands are much more profitable for the retailer than the private brands.
D) The known national brands attract customers into the department.
E) Sales are unpredictable and retailers prefer a sure thing with national brands.