Using the data below for the Ace Guitar Company: A Region B Region Sales $643,500 $786,500 Cost of goods sold 244,500 298,900 Selling expenses 154,400 188,800 Service department expenses $240,200 Purchasing Payroll accounting 160,200 Allocate service department expenses proportional to the sales of each region. Determine the divisional income from operations for the A and B regions. For interim calculations, round percentages to one decimal place. A Region B Region The Bottlebrush Company has income from operations of $135,840, invested assets of $283,000, and sales of $905,600. Round answers to one decimal place. (a) Determine the profit margin. (b) Determine investment turnover. (c) Use the DuPont formula to determined the rate of return on investment