Which two reasons would explain the failure?

An administrator attempts to create a Thick Provisioned Virtual Disk (VMDK) on an NFS datastore; but it fails.

Which two reasons would explain the failure? (Choose two.)
A . Datastore is on an NFS 3 storage server that does not support Hardware Acceleration
B . Datastore is on an NFS 4.1 storage server
C . Only VMFS datastores support "Thick Provisioned" VMDK
D . The NFS datastore was not created on a "Thick Provisioned" device

Answer: A,B