How can this be achieved?

A company is using an EMC Avamar multi-node server with 2 TB storage nodes. The company wants to add 3 TB of Avamar storage to the multi-node server.

How can this be achieved?
A . Add one 3.3 TB storage node
B . Add two 2 TB AVEs
C . Add two 2 TB storage nodes
D . Add three 1 TB storage nodes

Answer: C