Which of the Following Is Not a Way That a Router

Which of the following is not a way that a router differs from a switch?

A) routers can connect two or more networks that use the same data link protocol
B) routers only process messages that are specifically addressed to it
C) routers operate at the network layer
D) routers perform more processing on each message than switch
E) routers can choose the "best" route between networks for forwarding a packet