LSP "toR8-5" requests fast reroute protection on the primary loose path. What could be done to remove the Failure Code shown?
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A. CSPF must be enabled at head-end on fast reroute protected loose path LSPs
B. Fast reroute must first be enabled on the downstream routers.
C. CSPF must be enabled on all downstream loose hop routers.
D. Global revertive path optimization must be enabled so the path will be re-optimized around a failed node.
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