A Cost-Plus-Incentive-Fee (CPIF) contract has:-a target cost of $100,000；-a target fee of $20,000；-a maximum fee of $ 30,000；-a minimum fee of $ 15,000；-a sharing ratio of 80/20，The actual cost of the project is $150,000. What is the final price the buyer has to pay at the completion of the project?
A、150000
B、165000
C、170000
D、180000