As a research scholar, Richard had built a helicam as part of his project. The helicam could capture aerial images. Realizing the potential use of this product in movie production and military and rescue operations, he started a new venture where he could customize these helicams to fit the specific needs of the buyers and sell them. Richard can be best described as a(n) _____.
A. entrepreneur
B. category captain
C. franchisor
D. early adopter