How does VLAN tagging benefit network segmentation?

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How does VLAN tagging benefit network segmentation?
A . By encrypting data traffic between VLANs.
B . By ensuring the same IP address range can be used in different VLANs.
C . By enabling the identification and separation of traffic belonging to different VLANs.
D . By providing a backup path for data in case of link failure.

Answer: C