A monopolistic public enterprise aims at achieving the optimum distribution of productive forces. The public enterprise's total cost function is TC = 3Q2 (where TC is the total cost and Q is the quantity) and the function of reverse demand P = 100-4Q (where P is the price). Based on the above the enterprise will produce:
A. Q =4
B. Q=6
C. Q=100
D. Q = 10
Choose one of the above and justify your answer showing your solution process.