Edwards and Bell market a single line of home computers, dubbed the XL-98. The master budget for the coming year contained the following items: sales revenue, $385,500; variable costs, $255,500; fixed costs, $101,100. Actual results for the year were as follows sales revenue, $365,500; variable costs, $226,100; foced costs, $97,200. The flexible-budget operating income for the year vas $36,100. a. What is the total master (static) budget variance in operating profit for the period? b. What portion of the total master (static) budget varianceis attributable to actual sales volume being different from planned sales volume? c. What portion of the total variance is due to a combination of selling price and costs (variable cost per unit and fotal fixed costs) being different from budgeted amounts