When an Enterprise Campus network designer is addressing the merger of two companies with different IGPs， which of the following is considering a super routing design？（）

• A、 Eliminate the management and support for redistribution by choosing and cutting over to asingle IGP at the time of merger
• B、 Maintain distinct pockets across a moving boundary of routing protocols， redistributing betweenthem
• 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 companyentities is not required