Which of the following are valid choices for optimizing performance of Virtual Machines?

A.
Disable unused devic es such as COM ports, Floppy drives, and CD ROM drive

B.
Avoid installing vmware-tools on resource intensive virtual machines.

C.
Def ragment attached VMFS-3 volumes.

D.
Tune and size virtual machine operating systems as you would on physical hosts.

E.
Keep virtual machines that have similar resource requirements on the same host.