Mirror is a famous band in Hong Kong. Recently, a new DVD box called "One & All" is issued to the market. Music National Group is the only seller that has the exclusive right to issues the DVD boxes for Mirror. The table below shows the hypothetical demand schedule for Mirror's DVD boxes. Quantity (in boxes) 0 3,000 6,000 9,000 12,000 15,000 18,000 Price (S) 100 90 80 70 60 50 40 Table 3 (a) Use ONE table to calculate the total revenue and marginal revenue at each quantity of Mirror's DVD boxes. No working is needed. (4 marks) (b) Suppose the company's marginal cost is constant at $50 which is the same as its average total cost of producing Mirror's DVD boxes. Base on the profit maximization rule, what is the profit maximizing level of output and price for the market of Mirror's DVD boxes? How much profit is generated? Show your workings. (5 marks) (c) People in the market complaints that the price of Mirror's DVD boxes is too high and the quantity of it is too low. (i) Explain why the market of Mirror's DVD boxes does not achieve allocative efficiency. Support your answer with relevant figures. Show your workings. (4 marks) (ii) Give ONE argument to explain why government has a role to protect Music National Group as the only seller of Mirror's DVD boxes. (2 marks)