Suppose the own price elasticity of demand for good X is -4, its income elasticity is -2, its advertising elasticity is 4, and the cross-price elasticity of demand between it and good Y is 2. Determine how much the consumption of this good will change if: a. The price of good X decreases by 6 percent.b. The price of good Y increases by 9 percent. c. Advertising decreases by 3 percent. d. Income increases by 4 percent.