【单选题】
A rule deny tcp source 10.1.1.10 destination 202.100.1.12 0.0.0.0 destination-port eq 21
B rule deny tcp source 10.1.1.10 destination 202.100.1.12 0.0.0.0 destination-port eq 80
C rule deny udp source 10.1.1.10 destination 202.100.1.12 0.0.0.0 destination-port eq 21
D rule deny udp source 10.1.1.10 destination 202.100.1.12 0.0.0.0 destination-port eq 80
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