After Connecting a PC to an Available Port on a Switch

Multiple Choice

After connecting a PC to an available port on a switch, you find that the PC cannot access any of the resources on the LAN. No other PCs connected to the switch appear to be having any issues. What is the most likely cause of this problem?

A) The host MAC address is configured incorrectly.
B) The host switch port is assigned to the incorrect VLAN.
C) A STP instance for the new host has not been initialized.
D) The router lacks a routing table entry for the new host.