Which of the following is true with respect to Cisco Adapter FEX?

Which of the following is true with respect to Cisco Adapter FEX?

A.
Cisco Adapter FEX extends the Cisco FEX technology into a traditional rack servers MoR design.

B.
An EoR design is not permitted with Cisco Adapter FEX.

C.
Cisco Adapter FEX extends VDCs across multiple Cisco Nexus switches.

D.
A ToR design is not permitted with Cisco Adapter FEX.