Question 1 Problem 1-1 The difference between unit sales price and unit variable cost is the unit contribution margin. O True O False Question 2 Problem 1-2 A relatively low margin of safety ratio for a product is usually an indication that the product is riskier than higher margin of safety products. O True O False Question 3 Problem 1-3 The contribution margin in dollars is held constant is the key assumption must be made in order to use CVP analysis with multiple products. O True False