Suppose that H&M's per unit cost of a style of dresses that it sells in its retail outlets is $20. H&M practices cost-plus pricing and charges a 250 percent markup. If this markup also maximizes H&M's profit on this style of dresses, we can conclude that the price elasticity of demand for this style of H&M dresses is:
A. -1.67
B. -1.40
C. -0.50
D. -2.00
E. -1.50