How do HP Converged Infrastructure and HP CloudSystem solutions achieve multi-tenancy?

A.
By hosting multiple tenants across multiple isolated instances of the application
B.
By leveraging a metering capability at the application abstraction level
C.
By supporting multiple tenants within a single instance of the application on a highly available
and scalable central system
D.
By integrating heterogeneous thin-client platforms such as mobile phones, laptops, tablets, and
PDAs