In preparation for the deployment of your company’s private cloud, you have delegated the task of
populating the catalog which will be used to deploy your Org vDCs. Which two objects will you put
into the catalog? (Choose two.)

A.
Virtual Appliances

B.
vApp Templates

C.
VMs

D.
Media

Explanation:
http://blogs.vmware.com/vsphere/2011/11/linked-clones-part-1-fast-provisioning-invcloud-director-15.html(5th para)