Estimate and explain what is the income elasticity and what is the price elasticity of demand, of a coffee roasting company for the market: a) If quantity 1 is 100 Kg of roasted coffee for export and quantity 2 is 150 Kg of coffee. b) If price 1 is US $ 5 per Kg, and price 2 is US $ 6 per Kg. c) If income 1 is 7 US $ per Kg, and income 2 is 8 US $ per Kg.