Refer to the exhibit. You must design this network for IP Fast Reroute by enabling the OSPF Loop-Free Alternates (not Remote LoopFree Alternates). What is a concern about the proposed solution?

IP Fast Reroute using OSPF LFA is a native IP feature that operates independently of MPLS Traffic Engineering; MPLS TE is required only for Remote LFA (rLFA), not standard LFA.

In a ring topology, the LFA algorithm can incorrectly select a neighbor as an alternate next-hop whose own shortest path to the destination also traverses the failed link, meaning the 'alternate' path is not loop-free and will create a routing loop during failover rather than bypassing the failure.

OSPF LFA operates entirely at the IP layer and computes backup paths based on IGP topology; it is not dependent on any specific transport technology.

This option does not present a complete or technically valid concern and is therefore not a meaningful answer choice.

OSPF LFA is technically supported and can be configured on ring topologies; the actual concern is not lack of support but the risk of routing loops that can occur due to the ring's topological properties, which makes B the correct and more precise answer.