5 If a company's total expense line relative to its previous position shifts downward and has a steeper slope, which statement correctly describes the change in this company's cost structure? A. Variable expense per unit increases while the total fixed expenses decreases. B. Variable expense per unit decreases while the total fixed expenses decreases. C. Variable expense per unit increases while the total fixed expenses increases. D. Variable expense per unit decreases while the total fixed expenses increases. E. None of the above