How is SNCP and MS-SPRing traffic rerouted during a protection switch when a complete fiber cable cut occurs？（）

• A、 SNCP traffic is switched from the first node that recieves the AIS.  MS-SPRing traffic is rerouted from the first in the ring.
• B、 SNCP traffic is selected at the destination node in the ring.  MS-SPRing is rerouted from the originating node in the ring.
• C、 SNCP traffic is rerouted from the originating node in the ring. MS-SPRing traffic is rerouted from the originating node in the ring.
• D、 SNCP traffic is selected at the destination node in the ring. MS-SPRing traffic is rerouted from the last reachable node in the ring.