Which option represents an Efficiency challenge the administrator might face?

An administrator is examining a data center to validate that it is operating as efficiently as
possible. Which option represents an Efficiency challenge the administrator might face?

A.
Needing to easily roll back changes to workloads during testing and development.

B.
Wanting to align IT costs with corporate models by classifying IT as an operating
expense.

C.
Wanting to provide multi-tenant access to cloud resources without compromising
security.

D.
Needing semi-isolated and autonomous environments for the application development
teams.