9 2008 Corbel Corporation has two divisions: Division A and Division B. Last month, the company reported a contribution margin of $49,300 for Division A. Division B had a contribution margin ratio of 25% and its sales were $242,000. Net operating income for the company was $29,600 and traceable fixed expenses were $51,600. Corbel Corporation's common fixed expenses were: Multiple Choice $51,600 $109,800 $28.600 $80,200