Three years ago, Manfred Schmider's and aus einer's Flow Tax issued 15-year bonds. These bonds ofern mal 6.75 percent coupon when payments, and currently are in 7.8 percent of face value resulting on a yield to maturity of 7.024 percent. What is the tax cost of the tax rates 20 percent? 5.619 percent 2.318 percent 7.024 percent 4.636 percent C 3.512 percent