Benson Corporation's balance sheet indicates that the company has $530,000 invested in operating assets. During Year 2, Benson earned operating income of $56,180 on $1,060,000 of sales. Required a. Compute Benson's profit margin for Year 2. b. Compute Benson's turnover for Year 2. c. Compute Benson's return on investment for Year 2. d. Recompute Benson's ROI under each of the following independent assumptions: (1) Sales increase from $1,060,000 to $1,272,000, thereby resulting in an increase in operating income from $56,180 to $69,960. (2) Sales remain constant, but Benson reduces expenses, resulting in an increase in operating income from $56,180 to $58,300. (3) Benson is able to reduce its invested capital from $530,000 to $424,000 without affecting operating income.