Which of the following statements is true? 0 The larger the contribution margin ratio, the larger the dollar amount of sales required to cover a given amount of fixed expenses. 0 Total dollar sales needed to reach a given target profit is computed by dividing the sum of fixed costs and target profit by the contribution margin ratio. 0 If variable expenses per unit decrease and all other factors remain the same, the contribution margin ratio will also decrease. O Assuming total sales do not change, a shift in the sales mix from low-margin items to high margin items will decrease the weighted average contribution margin