A client calls in about a letter they received in the mail. The letter is dated 11/30 and is requesting payment of their contract. The contract was originated on 11/1 and the due date for paying the contract fee was 11/15. The cost of the contract was $12,000. There is a 10% late fee once a bill is over 21 days old. What is the current amount due? Round your answer to the nearest whole number. a. $12,000, b. $12,012, c. $12,120, d. $13,200