Under which two situations does the dead space reclamation feature VAAI Thin Provisioning offer the ability to reclaim blocks of a thin provisional LUN on a array? (Choose two)

A.
When a virtual machine is migrated to a different datastore.

B.
When a guest OS files in a virtual disk are deleted.

C.
When a virtual machine is migrated to a different host.

D.
When a virtual disk is deleted.

Explanation:
Page 188 from vsphere-esxi-vcenter-server-50-storage-guide.pdf