单选题Which statement describes a security zone?（）AA security zone can contain one or more interfaces.BA security zone can contain interfaces in multiple routing instances.CA security zone must contain two or more interfaces.DA security zone must contain bridge groups.
单选题
Which statement describes a security zone?（）
A
A security zone can contain one or more interfaces.
B
A security zone can contain interfaces in multiple routing instances.
C
A security zone must contain two or more interfaces.
D
A security zone must contain bridge groups.
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