As shown in the figure, in the network running the RSTP protocol, the original root port of SWC fails and the port is in Down state. At this time, which of the following processes will the network go through to achieve stability?

A . The standby port on the SWC becomes the new root port and enters the Forwarding state after passing through the Learning state
B . SWC re-elects the root port and directly enters the Forwarding state
C . The standby port on the SWC becomes the new root port and directly enters the Forwarding state
D . SWC re-elects the root port and enters the Forwarding state after passing through the Learning state

Answer: C