A company purchased bonds on July 1, 2021 for $281,859. This price represents a market rate of 7% on bonds that have a face amount of $300,000 , have a stated rate of 6% , pay semiannual interest, and mature in 8 years . calculate the amount of interest revenue as of December 31, 2021.

A.19,730

B.9,000

C.9,865

D. 18,000