A Trade Name Refers to

A trade name refers to

A) any word,device (design,sound,shape or color) ,or combination of these used to distinguish a seller's products or services.
B) the part of a brand name that can be spoken.
C) the legally registered brand name of a firm's product or service that give it exclusive use,thereby preventing competitors from using it.
D) the commercial,legal name under which a company does business.
E) a logotype plus the brand name.