Phil's Carvings, Inc. wants to have a weighted average cost of capital of 6.5 percent. The firm has an aftertax cost of debt of 4.4 percent and a cost of equity of 8.8 percent. What debt-equity ratio is needed for the firm to achieve their targeted weighted average cost of capital?

A) 2.10

B) 1.10

C) 0.91

D) 0.55

E) 1.91