Suppose, four years ago, you purchased a 20-year coupon bond paying 6% interest annually with a face value of $1000. It is now four years later and you just received an interest payment yesterday (the bond matures in exactly sixteen years). You look in the paper and the yield on comparable debt is 6.5%. What is the bond currently worth?

a. $893

b. $951

c. $1,013

d. $1,970

e. $777