Question 18 (5 points) There is an important relation between contribution margin and profit. Which of the following statements is not true? As the number of units sold increases, total contribution margin increases, but fixed costs remain the same As the number of units sold increases, profit increases by the variable cost per unit. As the number of units sold decreases, profit decreases by the contribution margin per unit. As the number of units sold decreases, total contribution margin decreases, but fixed costs remain the same