While attending a vCloud overview seminar, the presenter is describing how vCloud leverages
many existing vSphere features in building clouds. What does vCloud Director use to provide
CPU/RAM resource allocation and separation?

A.
Resource Affinity

B.
Organization vDC

C.
VASA Service Class

D.
Service Catalog

Explanation:
http://www.vmware.com/files/pdf/VMware-Architecting-vCloud-WP.pdf