Which two steps can an administrator take to upgrade an existing VMFS2 datastore to VMFS5?
(Choose two.)

A.
Attach the VMFS2 datastore to an ESX 3.x host and upgrade it to VMFS3

B.
Attach the VMFS2 datastore to the vSphere 5 host and upgrade it to VMFS3

C.
Upgrade the datastore from VMFS3 to VMFS5 on a vSphere 5 host

D.
Upgrade the ESX host attached to the storage to vSphere 5