When an Enterprise Campus network designer is addressing the merger of two companies with
different IGPs, which of the following is considered a superior routing design?

A.
Eliminate the management and support for redistribution by choosing and cutting over to a
single IGP at the time of merger

B.
Maintain distinct pockets across a moving boundary of routing protocols, redistributing between
them

C.
Manipulate the administrative distance of the different IGPs to be equal throughout the network

D.
Leave the IGPs independent without redistribution wherever communication between company
entities is not required