A project is delivering incremental business value to a customer. The success criteria for the project is a $20\%$ increase in market share for the customer.

When should the project be considered a success?

A$.$When the sprint reviews demonstrate that each iteration delivers a $20\%$ increase in market share.

B$.$After the project documentation is completed and the project team has been assigned to other projects.

C$.$At the conclusion of project execution, as part of the project closure report approval process.

D$.$When $75\%$ of the project has been completed and the Earned Value Management $($EVM$)$ diagram indicates that the value is on track.