The following information for advertising and sales revenue has been established over the past six months: Using the high-low method, which of the following is the correct equation for linking advertising and sales revenue from the above data? (5.0分) A. Sales revenue = 62,500 + (25 × advertising expenditure) B. Advertising expenditure = –2,500 + (0.04 × sales revenue) C. Sales revenue = 95,000 + (20 × advertising expenditure) D. Advertising expenditure = –4,750 + (0.05 × sales revenue)