Flexible budget for selling and administrative expenses for a service company Digital Solutions Inc. uses flexible budgets that are based on the following data: Sales commissions Advertising expense Miscellaneous administrative expense Office salaries expense Customer support expenses 15% of sales 20% of sales $8,500 per month plus 12% of sales $30,000 per month $14,000 per month plus 20% of sales Research and development expense $30,000 per month Prepare a flexible selling and administrative expenses budget for October for sales volumes of $400,000, $500,000, and $600,000. (Use Exhibit 4 as a model.) Digital Solutions Inc. Flexible Selling and Administrative Expenses Budget Line Item Description For the Month Ending October 31 Amount Amount Amount $400,000 $500,000 $600,000 Total sales Variable cost: Sales commissions Advertising expense Miscellaneous administrative expense Customer support expenses Total variable cost Fixed cost: Miscellaneous administrative expense Office salaries expense Customer support expenses Research and development expense Total fixed cost Total selling and administrative expenses