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

Explanation:
NFS datastores with Hardware Acceleration and VMFS datastores support the following disk provisioning policies. On NFS datastores that do not support Hardware
Acceleration, only thin format is available
https://communities.vmware.com/thread/447915?start=0&tstart=0