Corbel Corporation has two divisions: Division A and Division B. Last month, the company reported a contribution margin of $41,300 for Division A. Division B had a contribution margin ratio of 40% and its sales were $242,000. Net operating income for the company was $29,300 and traceable fixed expenses were $53,400. Corbel Corporation's common fixed expenses were Multiple Choice $138,100 $55,400 $108,800 $53,400