【单选题】
A access-list 101 permit tcp 172.168.0.0 0.0.0.255 host 10.1.0.10 eq 23
B access-list 101 permit tcp 172.168.0.0 0.0.0.255 host 10.1.0.10 eq ftp
C access-list 101 permit tcp host 10.1.0.10 172.168.0.0 255.255.255.0 eq 23
D access-list 101 permit tcp host 10.1.0.10 172.168.0.0 255.255.255.0 eq ftp
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