[多选题]13. 假设需要配置BGP策略以过滤前两个八位组为20.128的/20所有前缀，那么下面哪一项能够满足该过 滤进程的匹配逻辑，仅匹配所描述的子网，而不匹配其他子网?
A.access-list 1 deny 20.128.0.0 0.0.255.255
B.access-list 101 deny ip 20.128.0.0 0.0.255.255 host 255.255.240.0
C.ip prefix-list 1 deny 20.128.0.0/16 eq 20
D.ip prefix-list 2 deny 20.128.0.0/16 ge 20 le 20