please explain steps with financial calculator

4. Zlatan Inc. bonds are currently selling for $1.080 and have a par value of $1,000. They pay an $85 annual coupon and have a 15 year maturity, but they also have 10 years of call protection, along with an 11% call premium. What is Zlatan Inc, yield to call (YTC)? a) 5.69% b) 6.77% c) 7.64% d) 8.06% c) 10.56%