Where do HP Z230 workstations fit in the HP Z series workstation lineup?

A.
High-end ultimate performance with maximum expandability

B.
High-performance entry-level workstation in an all-in-one form factor

C.
Mid-level performance workstation that provides optional dual socket processor support

D.
Entry-level workstation that represents a value upgrade from an HP business desktop PC

Explanation:
http://h18004.www1.hp.com/products/quickspecs/14629_na/14629_na.pdf