Refer to the exhibit. The entire Marketing-SW1 MAC address table is shown here:
What does the switch do when PC-4 sends a frame to PC-1?

A. It performs a lookup in the MAC address table and discards the frame due to a missing entry.
B. It maps the Layer 2 MAC address to the Layer 3 IP address and forwards the frame.
C. It inserts the source MAC address and port into the table and forwards the frame to PC-1.
D. It floods the frame out of all ports except on the port where PC-1 is connected.