Five years ago, Downton and Co. issued 25 year coupon bonds. At the time of issuance, the yield to maturity was 6 percent p.a and the bonds sold at par. The bonds are currently selling at 110 percent of its par value. Assuming that the coupon is paid annually, what is the current yield to maturity? Please show your work.

(a) 2.5% p.a

(b) 5.18% p.a

(c) 6% p.a

(d) 7.33% p.a

(e) none of the above