In a Cost Plus Fixed Fee contract, what types of fees may be specified?

In a Cost Plus Fixed Fee contract, the allowable types of fees typically include a fixed fee that is agreed upon at the outset of the contract, which does not fluctuate based on the actual costs incurred. The correct answer identifies the concept of minimum and maximum fees, as these parameters can be set to ensure both parties have a clear understanding of the financial limits involved in the contract.

While it's accurate that there may be certain protections in place to delineate the range of fees, option C underscores the importance of managing risk for both the contractor and the client. Setting a minimum fee establishes a baseline for what the contractor will earn regardless of the project's cost overruns or inefficiencies, while establishing a maximum fee provides a cap to protect the client from excessive charges.

The other choices presented, while referencing various types of fees, do not align with the specific structure of Cost Plus Fixed Fee contracts as directly as the concept of minimum and maximum fees does. These contracts focus on reimbursing allowable costs and adding a predetermined fixed fee, rather than varying based on performance metrics, profit sharing, or other fluctuating financial instruments.