Based on the exhibit, what is the problem?

Refer to the exhibit.

Based on the exhibit, what is the problem?
A . An issue causes the spanning tree to converge and re-converge again and again.
B . Interface 25 on Switch-1 is incorrectly configured as an STP edge port and cause a loop to occur.
C . Interface 25 on Switch-1 does not support the correct VLANs and prevents the interface from receiving the correct STP role.
D . Switch-1 and another switch are configured with the same spanning tree priority and cause the root election to occur again and again.

Answer: A