Refer to the exhibit diagram and config uration. RTB is summarizing its networks from AS 64100 with the aggregate - address command. However, the show ip route command on RTA reveals the RTB individual networks as well as its summary route.
Which option would ensure that only the summary route  would appear in the routing table of RTA?（）

A. Add a static route with a prefix of 192.168.24.0 255.255.252.0 pointing to the null0 interface.
B. Create a route map permitting only the summary address.
C. Delete the four network statements and leave onl y the aggregate - address statement in the BGP configuration.
D. Add the keyword summary - only to the aggregate - address command.