Which two are default preference values for both internal and external IS-IS Level 2 routes on a Juniper Networks router？（）

A.Under the BGP group， configure family inet any
B.Use the set protocol MBGP command to enable MBGP
C.Under the BGP group， configure family inet multicast
D.Use the set rib-group command to copy the multicast routes into inet.1

A.224.0.0.39
B.224.0.1.39
C.224.0.0.40
D.224.0.1.40

A.AS path
B.Split horizon
C.Poison reverse
D.Unicast RPF check