The Magnetic Imaging Division of Medical Diagnostics, Inc., has reported the following results for last year's operations: Sales $29 million Net operating income $4 million Average operating assets $12 million a. Compute the Magnetic Imaging Division's margin, turnover, and ROI. b. Top management of Medical Diagnostics, Inc., has set a minimum required rate of return on average operating assets of 22%. What is the Magnetic Imaging Division's residual income for the year