You are considering using a fixed-price (FP) contract because you have well-defined requirements for your construction project. With your requirements and your understanding of the seller's competition, you are confident you will be able to establish a complete statement of work. The fee or profit in this type of contract is: A. Unknown B. Part of the negotiation involved in paying every invoice C. Applied as a line item to every invoice D. Determined with the other party at the end of the project