What effect will this upgrade have on the maximum file size supported by the datastore?

A 2TB VMFS3 datastore has been upgraded to VMFS5. The original block size was 2MB.

What effect will this upgrade have on the maximum file size supported by the datastore?

A.
The maximum virtual disk size remains 512MB

B.
The maximum virtual disk size increases to 1TB

C.
The maximum virtual disk size increases to 32TB providing the datastore is also increased

D.
The maximum virtual disk size increases to 2TB minus 512B

Explanation:
Reference: http://blogs.vmware.com/vsphere/2011/08/2tb-vmdks-on-upgraded-vmfs-3-to-vmfs-5- really.html