Suppose the demand for beer is characterized by the following point elasticities:own price elasticity = -2.5cross-price elasticity with soda = +3income elasticity = +2Based on the given elasticities, answer the following. Explain your answers.a. If a firm in the industry wishes to increase total sales revenue (ignoring cost considerations), will it raise or lower its selling price? Why?b. What happens to the demand for beer if the price of soda falls by 2%? Explain your answer.c. What happens to the demand for beer if consumer income rises by 5%? Be specific.d. Is beer a normal or inferior good? Explain.