All of the following are strategic imperatives described by PPD$-21$ to drive the Federal approach to strengthen critical infrastructure security and resilience EXCEPT:

A$.$ Refine and clarify functional relationships across the Federal Government to advance the national unity of effort to strengthen critical infrastructure security and resilience

B$.$ Implement an integration and analysis function to inform planning and operations decisions regarding critical infrastructure

C$.$ Coordinate with critical infrastructure owners and operators to improve cybersecurity information sharing and collaboratively develop and implement risk$-$based approaches to cybersecurity

D$.$ Enable effective information exchange by identifying baseline data and systems requirements for the Federal Government