One of the Categories of Products for Which Brand Extension

One of the categories of products for which brand extension is especially logical is

A) generic goods.
B) generic services.
C) commodities.
D) complementary goods.
E) licensed brands.
Complementary products are those that are used together-for example, chips and dip, or toothbrushes and toothpaste. It can often make sense to extend a brand to offer a complementary product under the same brand name.