Assume the following (1) sales =$200,000,(2) unit sales =10,000,(3) the contribution margin ratio =27%, and (4) net operating income =$10,000, Given these four assumptions, which of the following is true? Multiple Choice The totol contribution margin =554,000 The variable expense per unit =$5.40 The break-even point is 8.913 unts The total fued expenses =$146,000