Tiger Farm Insurance company has invested in two securities a) a 15 year Treasury Bond yielding 6.40%, and b) a 15 year Doc Electric BBB rated Corporate bond for which the default risk premium for a comparable security is 1.7% and the liquidity premium is .45%. The inflation premium is 3.5%. for a 15 year security. What is the yield for the Doc Electric 15 year BBB rated Corporate bond?

a. 6.40%

b. 12.05%

c. 8.10%

d. 8.55%

e. 6.85%