Company XYZ has bonds on the market with a par value of $1000 and a coupon rate of 5.7%. The bonds make semiannual coupon payments and are currently selling for $830.50. The prevalling yleld is 8.15%. How many years do the bonds have left until they mature? O 5.19 years 19.96 years 20.77 years O 10.39 years O 29.14 years