What is a new feature of NFS v4 1 in Windows Storage Server 2012?

What is a new feature of NFS v4 1 in Windows Storage Server 2012?

A.
Inline deduplication

B.
Autonomic groups

C.
Network raid support

D.
Continuous availability

Explanation:
http://h20195.www2.hp.com/v2/getpdf.aspx/4AA5-4187ENW.pdf