All of the following statements about price are true except a. small changes in price can have big effects on both the number of units sold and company profit. b. the price for a product or service must earn a profit for the company. c. the price for most products and services is always the same. d. the price must be "right"β€”in the sense that customers must be willing to pay it. e. the price must generate enough sales dollars to pay for the cost of developing, producing, and marketing the product.