Supporters of antimonopoly enforcement argue that the real gain from such enforcement ?

A. is that if encourages firms to engage in research which leads to new products
B. is the revenue generated from the fines paid by those individuals who are found guilty of antitrust violation?
C. Is that this policy serves to deter firms from engaging in such practices as collusion, price-fixing and deceptive advertising
D. is that it forces firms to produce efficiently.