Assume the following (1) sales = $200,000, (2) unit sales = 10,000, (3) the contribution margin ratio = 25%, and (4) net operating income = $10,000. Given these four assumptions, which of the following is true? The total contribution margin = $50,000 The break-even point is 9,000 units The variable expense per unit = $5 The total fixed expenses = $150,000