Once It's Patent Application Has Been Accepted, a Firm Is

Once it's patent application has been accepted, a firm is able to earn _______ on its product, which _______.

A) an increased rate of return for investors; raises doubts further R&D activities
B) more profit; will allow it to recover the biggest slice of the social value created
C) monopoly profits; offers an incentive for research and development to take place
D) competitive profits; creates incentive for continuing innovative R&D projects