You are merging MDS, B-series and M-series switches. The M=series switch merged with the Bseries switch. The B-series switch merged with the MDS switch. The MDS switch would not merge with the M-series switch. What is the problem?

A.
The M-series Interoperability mode is set to Open Fabric

B.
The M-series Interoperability mode is set to M-series Fabric

C.
The B-series Interoperability mode is set to Open Fabric

D.
The MDS Interoperability mode is set to Legacy Switch Mode 2