⟩ Explain What best describes the following configuration example of allowas-in? router bgp 100address-family ipv4 vrf CustomerAneighbor 195.12.4.5 remote-as 123 neighbor 195.12.4.5activateneighbor 195.12.4.5 allowas-in 2A.permits incoming BGP updates defined by access-list 2B.permits incoming BGP updates defined by class-map 2C.permit incoming BGP updates defined by route-map 2D.permits incoming BGP updates with no more than two occurrences of AS 100 in the AS pathE.permits incoming BGP updates with no more than two occurrences of AS 123 in the AS path