Assume the following (1) variable expenses = $308,000, (2) unit sales = 10,000, (3) the contribution margin ratio = 30%, and (4) net operating income = $10,000. Given these four assumptions, which of the following is true? Multiple Choice The variable expense ratio is 233% The total fixed expenses = $92,400 The total contribution margin = $215,600 The total sales = $440,000