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Q8 Single choice

Refer to the exhibit.

The network administrator has configured the Customer Edge router (AS 64511) to send only summarized
routes toward ISP-1 (AS 100) and ISP-2 (AS 200).

After this configuration, ISP-1 and ISP-2 continue to receive the specific routes and the summary route.

Which configuration resolves the issue?

A
router bgp 64511
aggregate-address 172.16.20.0 255.255.252.0 summary-only
B
router bgp 64511
neighbor 192.168.100.1 summary-only
neighbor 192.168.200.2 summary-only
C
interface E 0/0
ip bgp suppress-map BLOCK_SPECIFIC
!
interface E 0/1
ip bgp suppress-map BLOCK_SPECIFIC
!
ip prefix-list PL_BLOCK_SPECIFIC permit 172.16.20.0/22 ge 24 !
route-map BLOCK_SPECIFIC permit 10
match ip address prefix-list PL_BLOCK_SPECIFIC
D
ip prefix-list PL_BLOCK_SPECIFIC deny 172.16.20.0/22 ge 22 ip prefix-list PL BLOCK SPECIFIC
permit 172.16.20.0/22 !
route-map BLOCK_SPECIFIC permit 10
match ip address prefix-list PL_BLOCK_SPECIFIC
!
router bgp 64511
aggregate-address 172.16.20.0 255 255.252.0 suppress-map BLOCKSPECIFIC

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