What is the maximum number of nodes a NAS cluster can have?

What is the maximum number of nodes a NAS cluster can have?

A.
1

B.
2

C.
4

D.
8

E.
16

F.
24

G.
32

Explanation:
ce: http://www.netapp.com/in/communities/tech-ontap/tot-clustermode-1207.aspx (scalability and
performance, first sentence)