please answer the following

6. Which form earns a greater profit - the single-price monopolist or the price- discriminating monopolist? Paper : Mar 7. Which firm produces a smaller quantity - the single-price monopolist or the price- discriminating monopolist? 8. Can a perfectly competitive firm price discriminate? Why or why not? 9. Assume a profit maximizing firm price discriminates by charging two different groups of consumers different prices for its product. Which group will it charge a higher price, the one with an elastic demand for the product or the one with an inelastic demand for the product? Explain. 10. What is perfect price discrimination? 11. What happens to consumer surplus if a firm perfectly price discriminates? Explain