A bond has the following terms: 1) $100 face value, 2) 3-year maturity and 3) 15% annual coupon rate. The bond's current yield-to-maturity is 10% per annum. Which one of the following answers is closest to the bond's duration? (Please round your calculation to the nearest 2nd decimal) Select one: O a 2.55 years O b. 2.65 years od 2.75 years od 2.85 years oe 295 years