How are fully provisioned desktops created for automated pools, whether floating or dedicated?

A.
They are deployed from a pre-configured template

B.
They are cloned from an existing desktop

C.
They are deployed form an existing .ISO image

D.
They are created from scratch

Explanation:
http://pubs.vmware.com/view-51/topic/com.vmware.ICbase/PDF/view-51-architectureplanning.pdf(page 10, 6th bullet)