What are the possible node configurations for a single Gen4 cube?

A CE is out in the field doing a Gen4 install, and notices that there are too many or too few nodes.
What are the possible node configurations for a single Gen4 cube?

A.
4, 8, 16, 32

B.
8, 12, 16, 24

C.
8, 12, 16, 32

D.
4, 8, 12, 16