You are considering deploying Linked Clones in your environment. How are Linked Clones
created?

A.
Linked Clones are actually created from scratch

B.
Linked Clones are actually cloned on demand from a reference virtual machine

C.
Linked Clones are deployed from a snapshot of a reference virtual machine

D.
Linked Clones are deployed from a special .ISO image

Explanation:
http://pubs.vmware.com/appdirector-5.2/index.jsp?topic=%2Fcom.vmware.appdirector5.2.using.doc%2FGUID-FA1DAAB7-2CB7-4BF2-822A-6B49380FF4B7.html