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 14% of sales Advertising expense 20% of sales Miscellaneous administrative expense $5,500 per month plus 12% of sales Office salaries expense $28,000 per month Customer support expenses $12,000 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 5 as a model.) Digital Solutions Inc. Flexible Selling and Administrative Expenses Budget For the Month Ending October 31 Total sales $400,000 $500,000 $600,000 Variable cost: Total variable cost $ Fixed cost: Total fixed cost Total selling and administrative expenses