When using Data ONTAP 8.1 Cluster-Mode and later, what is the default for new aggregates?

A.
32-bit aggregates

B.
64-bit aggregates

C.
128-bit aggregates

D.
cluster aggregates

E.
traditional aggregates

F.
Vserver aggregates

Explanation:
http://www.globbtv.com/microsite/18/Adjuntos/TR-4067%20NFSV3V4%20IN%20DATA%20ONTAP%208.1%20OPERATING%20IN%20CLUSTERMODE%20IMPLEMENTATION%20GUIDE.PDF (page 6, aggregates)