Which two settings determine the amount of memory overhead required by a virtual machine? (Choose two)

A.
Reserved memory

B.
Configured memory

C.
Guest operating system (32- or 64-bit)

D.
Number of vCPUs

Explanation:
http://pubs.vmware.com/vsphere-50/index.jsp?topic=/com.vmware.vsphere.vcenterhost.doc_50/GUID-3B5AF2B1-C534-4426- B97A-D14019A8010F.html