What is the minimum requirement to be able to use Solaris zones?

A.
Solaris zones require a SPARC system.

B.
Solaris zones require a network interface.

C.
Solaris zones require the SUNWCuser metacluster.

D.
Solaris zones require the fair share sheduler (FSS).

E.
Solaris zones require at least two CPUs (or two cores).