What is a description of a control plane action?

What is a description of a control plane action?
A . de-encapsulating and re-encapsulating a packet in a data-link frame
B . matching the destination MAC address of an Ethernet frame to the MAC address table
C . matching the destination IP address of an IP packet to the IP routing table
D . hosts locating routers that reside on attached links using the IPv6 Neighbor Discover Protocol

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Answer: C