Besides BGP policy scaling and IBGP mesh scaling, service providers need to concentrate on controlling _______.
A.
The AS-Path length by using AS-PATH prepending.
B.
The BGP query process by using route summarization.
C.
The number of routes being redistributed from BGP into the IGP using route-maps.
D.
The number of routes being redistributed from the IGP into the BGP using route-maps.
E.
The number of BGP updates and the size of the BGP forwarding tables using route aggregation.