Corbel Corporation has two divisions: Division A and Division B. Last month, the company reported a contribution margin of $47,800 for Division A. Division B had a contribution margin ratio of 25% and its sales were $235.000. Net operating income for the company was $35,700 and traceable fixed expenses were $55,400. Corbel Corporation's common fixed expenses were: Multiple Choice $15.450 $55,400 $70,850 $106.550