Refer to the exhibit. The Customer Edge router wants to use AS 100 as the preferred ISP for all external routes and SP2 as a backup. Customer-Edge - Plaintext route-map SETAS set as-path prepend 111 ! router bgp 64555 neighbor 192.168.1.1 remote-as 100 neighbor 192.168.2.2 remote-as 200 neighbor 192.168.2.2 route-map SETAS in After this configuration, all the backup routes have disappeared from the BGP table on the Customer Edge router. Which set of configurations resolves the issue on the Customer Edge router? (Choose one answer)

• A. route-map SETAS
  set as-path prepend 200
  !
  router bgp 64555
  neighbor 192.168.1.1 remote-as 100
  neighbor 192.168.2.2 remote-as 200
  neighbor 192.168.2.2 route-map SETAS in
• B. route-map SETAS
  set as-path prepend 111
  !
  router bgp 64555
  neighbor 192.168.1.1 remote-as 100
  neighbor 192.168.2.2 remote-as 200
  neighbor 192.168.2.2 route-map SETAS out
• C. route-map SETAS
  set as-path prepend 200
  !
  router bgp 64555
  neighbor 192.168.1.1 remote-as 100
  neighbor 192.168.2.2 remote-as 200
  neighbor 192.168.2.2 route-map SETAS out
• D. route-map SETAS
  set as-path prepend 111
  !
  router bgp 64555
  neighbor 192.168.2.2 remote-as 100
  neighbor 192.168.1.1 remote-as 200
  neighbor 192.168.1.1 route-map SETAS in

Correct Answer: C

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