Assume the following (1) sales = $200,000, (2) unit sales - 10,000, (3) the contribution margin ratio - 39%, and (4) net operating income $10,000. Given these four assumptions, which of the following is true? Multiple Choice The variable expense per unit $7.80 The total fixed expenses- $122,000 The break-even point is 7727 units: The total contribution margi$78.000