In addition to the need for creating an aesthetically pleasing retail environment, store designers and visual merchandisers must be concerned about a. the corporate public relations value of commitment to environmentally responsible operation b. the added costs of installing and operating air-conditioning equipment made necessary by the amount of heat-producing lighting the store requires c. attaining federally-required LEED certification for all future store construction d. the expense of fixturing and lighting a retail store effectively and efficiently e. All of the above EXCEPT C