Ronald is working on a complex project, which he needs to work with the functional managers. Currently, he is involved in the process group which obtains formal sign-off from customer for the project or phase, measure customer satisfaction, archive project records and documents, document lessons learned and release the resources. The process which Ronald is involved in is called?

A. Direct and manage project work.

B. monitor and control project work.

C. Close project.

D. Perform integrated change control.