What is the major difference between the UltraPoint DAE2P and the DAE2?

What is the major difference between the UltraPoint DAE2P and the DAE2?

A.
The DAE2P supports 15 drives.

B.
The DAE2P supports 10 Gb Fibre Channel.

C.
The DAE2P connects to its drives using a Switch.

D.
The DAE2P connects to its drives via Fibre Channel Arbitrated Loop.