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.
