a. I a company's profit line relative to its previous position shifts downward and has a steeper slope, which of the following statements is correct about the company's cost structure? Multiple Choice Both variable cost per unit and the total fixed costs decrease. O Variable cost per unit increases while the total fixed costs decrease Variable cost per unit decreases while the total fixed costs remain the same Unit contribution margin decreases while the total cod costs increase Both unit contribuon margin and the total food costs increase