Four network elements A, B, C, and D form a two-fiber bidirectional multiplexed segment shared protection ring, among which there are many PDH services between A and B. On a certain day, the fiber between A and B was interrupted. In order to eliminate the R-LOS alarm on the network management, an engineer looped the optical ports on both ends of the interrupted fiber. After 10 minutes by default, what would happen?

Four network elements A, B, C, and D form a two-fiber bidirectional multiplexed segment shared protection ring, among which there are many PDH services between A and B. On a certain day, the fiber between A and B was interrupted. In order to eliminate the R-LOS alarm on the network management, an engineer looped the optical ports on both ends of the interrupted fiber. After 10 minutes by default, what would happen?
A . The service between A and B is interrupted and the switching alarm disappears
B . The service between A and B is not affected, and the switching alarm does not disappear
C . The service between A and B is interrupted, and the switching alarm does not disappear
D . The service between A and B is not affected, and the switching alarm disappears

Answer: B