Digital Solutions Inc. uses flexible budgets that are based on the following data: Sales commissions 8% of sales Advertising expense Miscellaneous administrative expense Office salaries expense 15% of sales $10,000 per month plus 4% of sales $50,000 per month $20,000 per month plus 30% of sales $75,000 per month Customer support expenses Research and development expense Prepare a flexible selling and administrative expenses budget for October for sales volumes of $500,000, $750,000, and $1,000,000. (Use Exhibit 5 as a model.) Digital Solutions Inc. Flexible Selling and Admipistrative Expenses Budget For the Month Ehding October 31 Total sales $500,000 $750,000 $1,000,000 Variable cost Total variable cost Fixed cost: Total fixed cost Total selling and administrative expenses