Before upgrading an ESXi host to vSphere 5.x from vSphere 4.x, which three actions should be taken? (Choose three.)

A.
Update vCenter from 4.x to 5.x

B.
Convert any Service Console port to Management.

C.
Add an updated license to the host

D.
Update vSphere 4.x licenses using the VMware License Portal

E.
Verify the intended host is compatible with vSphere 5.x