When Shopping for Clothing Such as Shirts and Jeans, Tyrone

When shopping for clothing such as shirts and jeans, Tyrone only buys products from Eastern Clothing Company even if there are several other companies that offer similar products at lower prices.Tyrone's preference for Eastern Clothing Company demonstrates:

A) lack of demand.
B) bargaining power.
C) risk of entry.
D) brand loyalty.
E) lack of economies of scale