Orbi Corporation has 600,000 shares of common stock outstanding at a market price of $45 a share. Last month, the company paid an annual dividend in the amount of $1.80 per share. The dividend growth rate is 6%. Orbi also has 25,000 bonds outstanding with a face value of $1,000 per bond. The bonds carry a 6% coupon, pay interest annually, and mature in 10 years. The bonds are sold at par. The company's tax rate is 25%. What is the company's weighted average cost of capital?

A.7.48%

B.7.65%

C.7.83%

D.7.12%

E.6.87%