【单选题】
What is the best description of serialization delay? ()
A、the time it takes for a Layer 3 switch or a router to switch a packet from an inbound interface to the queue of the outbound interface
B、the time it takes for a propagate from source to destination
C、the time it takes to place a frame on the physical medium for transport
D、the time a packet resides in the outbound queue of a router