A monopolist produces a product with price, quantity sold and marginal cost as shown in the table below. The fixed cost is $50. Price ($) Quantity Sold Marginal Cost ($) 100 20 90 30 80 40 70 50 60 60 (a) If the monopolist need to sell at a standard price, determine the optimal quantity, the price, and the profit of the monopolist. (b) If the monopolist can practice perfect price discrimination, determine the optimal quantity, the price and the profit of the monopolist