What are the characteristics of the port groups on Symmetrix storage arrays running Enginuity 5876?

A.
May contain valid front-end ports, only fibre and GigE ports, enabled ACLX flag on ports.

B.
A port belongs only to one port group, enabled ACLX flag on ports, only fibre and GigE ports.

C.
Can have mixed port types, only fibre and GigE ports, disabled ACLX flag on ports.

D.
Enabled ACLX flag on ports, can have mixed port types, can contain valid back-end ports.