How does the Celerra CNS-14 differ from the Celerra CFS-14?

A.
CFS-14 has one Control Station, CNS-14 has two

B.
CNS-14 does not have a keyboard or monitor

C.
CNS-14 has a keyboard and monitor on the outside of the front door, CFS-14 has the key board and monitor on the inside of the front door

D.
The CNS-14 does not have a keyboard or monitor