【单选题】
A <{p}>at me device level (globally to protect firewall resources and ingress zones, but not at the zone level<{/p}>
B <{p}>at the device level (globally) and it enabled globally, at the zone level<{br/}><{/p}>
C <{p}>at the interlace level to protect firewall resources<{/p}>
D <{p}>at zone level to protect firewall resources and ingress zones but not at the device leve<{br/}><{/p}>
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