Hadley Homes, a building contractor and Wesley have a contract, which calls for Hadley to builda 4-bedroom house with the completion of it by June 15. If the house is not completed by that date,the contract calls for Hadley to pay $100 per day in damages. The $100 per day is_______.
(A) punitive damages.(B) nominal damages.(C) liquidated damages.(D) an illegal penalty.