Which quick action resolves the issue until R4 recovers?

Refer to the exhibit.

An MPLS core network has connectivity issues R4 has failed. It impacts traffic loss between R1 and R8. Customers report no access to their file servers, which delays their transformation work .

Which quick action resolves the issue until R4 recovers?
A . Implement Link and Node protection on routers R2 and R7.
B . Disable traffic engineering so that traffic prefers the IGP path
C . Enable MPLS TE fast reroute on router R1 and Link and Node protection on router R2.
D . Configure IBGP full mesh for faster convergence.

Answer: C