Winter coats are sold in a perfect market. Ceteris paribus-what will happen to the demand for coats and the equilibrium quantity and price in the following cases (show in a diagram each case and provide a short explanation): a. The price of sweaters increases, and sweaters are substitute good. b. The winter is mild, and temperatures are warmer than usual. c. Many people experience a decrease in their income, and coats are a normal good. d. There is an expectation that coats will become less expensive in two weeks. ANSWER Type your answer here...