Four network elements A, B, C, and D form a two-fiber bidirectional multiplex section shared protection ring, and there are a large number of PDH services between A and B. One day, the optical fiber between A and B is interrupted. In order to eliminate the R-LOS alarm on the network management system, an engineer performs a self-loop on the optical ports at both ends of the interrupted optical fiber. After 10 minutes by default, what will happen?

Four network elements A, B, C, and D form a two-fiber bidirectional multiplex section shared protection ring, and there are a large number of PDH services between A and B. One day, the optical fiber between A and B is interrupted. In order to eliminate the R-LOS alarm on the network management system, an engineer performs a self-loop on the optical ports at both ends of the interrupted optical fiber. After 10 minutes by default, what will happen?
A . The service between A and B is interrupted, and the switching alarm disappears.
B. The services of A and B are 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 business between A and B is not affected, and the switching alarm disappears

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Answer: B