5. For Aurora Company - Actual Sales are $1,000,000 Break-even sales are $800,000 a. What is the margin of safety in dollars? b. What is the margin of safety ratio? 3. The relevant range of activity refers to the geographical areas where the company plans to operate. b. activity level where all costs are curvilinear. level of activity over which the company expects to operate. d. level of activity where all costs are constant. C. 1. A company sells a product which has: a unit sales price of $5 a unit variable cost of $3 total fixed costs of $240,000 What is the number of units the company must sell to break even