15. Which of the following statements is incorrect A. The price elasticity of demand is a measure of the responsiveness of demand to a change in price, when all other factors remain equal. B. The price elasticity of demand is defined as the percentage change in quantity demanded divided by the percentage change in price that brought it about. C. The price elasticity of demand shows the increase in price with a change in demand. D. None of the above. . * A B. C. D