Flexible Budget for Selling and Administrative Expenses for a Service Company Cloud Productivity Inc. uses flexible budgets that are based on the following data: Sales commissions 14% of sales Advertising expense 18% of sales Miscellaneous administrative expense $6,500 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 March for sales volumes of $400,000, $500,000, and $600,000. (Use Exhibit 5 as a model.)