On December 31, 2020, Cardo's Consulting provided services valued at $15,000. In exchange, Cardo's received $3,000 immediately and a note requiring the customer to make three equal annual payments, with the first payment to be made on December 31, 2021. The stated interest rate on the note is 10% and is considered reasonable.

A) How much service revenue would Cardo's record on December 31, 2020?

B) What is the amount of each annual payment for this note?

C) Determine total interest revenue recognized over the life of the note?