How does the Service Processor communicate with all 8 engines in a VMAX 20K?

A.
Ethernet cables are directly connected to Management Modules in engine 8 and engine 1,
which are daisy chained to the other six engines.

B.
Ethernet cables are directly connected to Management Modules in engine 4 and engine 5,
which are daisy chained to the other six engines.

C.
Ethernet cables are directly connected to each Management Module in each engine.

D.
Ethernet cables are directly connected to the Management Modules in engine 4 which is daisy
chained to the other seven engines.