Which of the Following Distinguishes a Patent Held by a Large

Which of the following distinguishes a patent held by a large commercial entity from a patent held by a small commercial entity?

A) 17-year patent granted to a large commercial entity; small entity receives 20 years
B) delay granted to a small commercial entity to facilitate market testing of its product
C) amount required to be paid for approval of patent application
D) amount of registry's assessed annual patent maintenance fee