The Only Difference Between a Brand Name and a Trade

The only difference between a brand name and a trade name is

A) brand names are licensed while trade names are not.
B) trade names are legally registered and brand names may not be.
C) a brand name is only the word that is spoken to distinguish a seller's products or services but a trade name consists of both the spoken and unspoken word or mark that distinguishes a seller's products or services.
D) a brand name can cover an array of company product items while a trademark can only apply to a single SKU for a product item.
E) brand names are protected by law but trademarks are not.