Which of the following statements are true? 1. The margin of safety ratio helps us understand the relative risk of a company by measuring the percentage by which sales can drop before the company incurs losses. 11. In conditions of limited resources, companies should choose to manufacture the product with highest unit contribution margin. III. Break-even point can be computed in terms of both sales dollars and units for a company. IV. Cost-volume-profit analysis, among other things, is a critical factor in helping companies determine product mix and how to best maximize the use of their production facilities. V. Sales mix is a measure of the relative percentage of a company's variable costs to its fixed costs. O I, IV, V O I, III, IV O 1,11 O I, III All of the above