across the whole environment as well also, what are the follows?

Consider also the activities necessary for performing transaction BDLS to switch the logical name

across the whole environment as well also, what are the follows?
A . Open also the MDG System in SCC4 to a mode which allows to perform necessary Customizing
Activities – which can not being transported (Replication Cutover) etc.
B . Specify the httpurlloc table entries if needed to enable transactions like NWBC and SOAMANAGER will be forwarded to the proper link from MDG system.
C . Check and, if necessary, initiate the transport route from DEV QAS PR
E . Set DNS entries on network level for the WEB-Link access to MDG System to enable name resolution for the links: https://mdgappserver/nwbc/~launch/?sapclient=100&sap-language=EN

Answer: A,C