After implementing a design, what is the goal of the next step in the PPDIOO model?

After implementing a design, what is the goal of the next step in the PPDIOO model?

A.
Improve operational performance, extend services, and reassess network value, as part of the operate phase

B.
Develop a detailed design for the network and its existing infrastructure, as part of the operate phase.

C.
Monitor the health and vital signs of a network to improve service quality, as part of the operate phase

D.
Review the company business goals and network infrastructure in an effort to find areas of improvement, as part of the operate phase.