You have a large number of systems in your organization which are currently running either Solaris 2.6 or Solaris 7. You have been tasked with ensuring that all of these systems are running Solaris 9, and you are considering using the Flash installation feature to achieve this. What is a requirement for using the Flash installation feature?

A.
You must be performing an initial installation.

B.
You must be performing an upgrade installation.

C.
You must make the Flash archive available using NFS.

D.
You must run a pre-install script on each system to slice the disk.