25. What would be the cost equation if regression analysis is used? A. Maintenance Costs = 7.2884 + 684.65 x Hours of Activity B. Maintenance Costs = 684.65 + 49.515 x Hours of Activity C. Maintenance Costs = 684.65 + 7.2884 x Hours of Activity D. Maintenance Costs = 34.469 + .99724 x Hours of Activity