As It Relates to R&D, the Imitation Problem Is That

As it relates to R&D, the imitation problem is that

A) patents, copyrights, and trademarks hinder imitation and thus limit economically desirable diffusion.
B) brand names create entry barriers for would-be competitors.
C) diffusion of innovation occurs more slowly than is desirable from society's perspective.
D) a firm's rivals may be able to copy its new product or process innovation, reducing the original firm's return on R&D.