Demand for imported organic Australian grapes by supermarkets in Denpasar is as follows: Q = 15,000 10P where Q is quantity of imported organic Australian grapes (in tons per month) and P is price per ton (in $). a. Right now, there are several importers of organic grapes. If the total cost of importing organic grapaes is TC = 0.05Q² + 12,500 calculate P and Q that maximizes each importer's profit if they are operating in a competitive market. (6 points) b. The Government of Indonesia (GOI) is considering a policy to only allow import of organic grapes by certified importers. Currently, only one importer is certified. Given everything else being equal (ceteris paribus), calculate Q and P if the policy is implemented. (6 points) c. Do you support the proposed policy in point (b)? Explain your answer by comparing conditions in (a) and (b) and their consequences, which should include supporting graph. (7 points) d. During the pandemic, importers consider selling directly to consumer online. However, importers are not sure what price to charge - should it be the same price as charged to supermarkets? The main consideration is that retail consumers buy lower quantities of products. Give your advice on the kind of price discrimination strategy that the importer can implement to maximize profit. Support your advice with a graph. (6 points)