C) Given the following information of two demanded commodities X and Y : (4.5 Marks) 1) Calculate price elasticity of demand for good X and Y. State whether the good is elastic or inelastic. 2) Calculate the cross price elasticity of demand between the two commodities X and Y. What the type of the two goods? 3) If individual's income increased from 1200 OMR to 1400 OMR, which causes an increase in quantity demanded of good X from 20 to 30 units. Calculate the income elasticity of demand and state whether the good is normal or inferior