What Is Acquiring Secondary Meaning in Trademark Terms

Multiple Choice

What is acquiring secondary meaning in trademark terms?

A) when a mark that resembles a mark already registered with the federal PTO is used for a new product or service
B) when descriptive words are used that have no direct relevance to a product or service
C) when ordinary words establish new meaning due to its attachment to a product or service
D) when a distinctive mark or design is created for a new product or service