Quick, Inc. has 50 bonds outstanding with a market value of $1,000 each and with a yield to maturity of 6.8% and an annual coupon rate of 6%. Tax rate is 17%. The firm also has 5,000 shares of common stock outstanding. The stock has a beta of 0.9 and sells for $10 a share. Risk-free rate is 2% and the market risk premium is 5%. What is the firm's WACC?

Question 3 options:

7.18%

5.60%

6.07%

4.20%