can you please help me answer the following question!

McGill Inc. has just issued 10-year bonds that have a face value of $1,000 with a 12% coupon rate paid annually. The bands sold for $960, but McGill Inc. had to pay $10 flotation costs as well. McGill Inc. has a 30% tax rate. What is the after tax cost of debt? A) 129184% B) 11.1025% 9.0429% D) 7.7717% E) 3.8755%