We often have change requests from the customer after a project is already in motion. How do we effectively charge for that extra work?

A. Sum the hourly rate of each employee who completes a new activity, and charge that amount in a time and materials contract.

B. Calculate the cost of the changes and add the profit margin, original project changes, risk and your project management time.

C. Divide the estimated hours of the original project into the contract amount and charge that amount per hour.

D. Write the contract so that each potential added feature comes at a fixed-price cost.