What is the recommended procedure for changing the BGN in a mesh network that is running version 7.0 while maintaining connectivity to relevant APs?

A.
Start with the most distant AP and work toward the RAP, configuring the RAP last.

B.
Configure the RAP first, and then work from the most distant AP toward the RAP.

C.
Configure groups of APs that have formed parent/child/neighbor relationships as groups within the mesh, and then configure the RAP.

D.
Configure secondary BGN throughout the mesh network, and then delete the original BGN.