Refer to the exhibit. A network consultant is updating the company s MPLS solution and configuring several new PE devices to enable full communication among PE devices connected to the network. The updates must ensure the redundancy and scalability of the network The egress LSR is configured with mpls Idp explicit-null While configuring the given PE router to be adjacent to the egress LSR. the consultant notices that MPLS forwarding is not working in the network Which action resolves the issue?