Based on market research, a film production company in Ectenia obtains the following information about the demand and production costs of its new DVD:
Demand: P=1000-10Q
Total Revenue: TR=1000Q-10Q2
Marginal Revenue: MR=1000-20Q
Marginal Cost: MC=100+10Q
Where Q indicates the number or copies sold and P is the price in Ectenian dollars.
A. Find the price and quantity that maximizes the company's profit
B. Find the price and quantity that would maximize social welfare
C. Find out Dead weight loss