The market for wine is perfectly competitive. An increase in disease in wine grapes, and an increase in the price of beer (a substitute for wine} occur. The effect on the market for wine is likely to be 0 (a) a decrease in the supply of wine, and a decrease in the demand for wine. 0 (b) a decrease in the equilibrium quantity traded of wine, and it is not possible to say what will happen to the equilibrium price of wine. 0 (c) a decrease in the supply of wine and an increase in the demand for wine. 0 (d) an increase in the equilibrium price of wine, and it is not possible to say what will happen to the equilbrium quantity traded of wine. 0 (e) both (c) and (d)