Campbell Educational Services had budgeted its training service charge at $72 per hour. The company planned to provide 28,000 hours of training services during Year 3. By lowering the service charge to $58 per hour, the company was able to increase the actual number of hours to 29,200 Required 0. Determine the sales volume variance, and indicate whether it is favorable (F) or unfavorable (U). Note: Select "None" if there is no effect (i.e., zero varionce). b. Determine the flexible budget varance, and indicate whether it is fovorable (F) ot unfavorable (U). Note: Select "None" if there is no effect (i.e., zero voriance). c. Did lowering the price of training services increase revenue