Refer to the exhibit. An Ethernet access provider is configuring routers PE-1 and PE-2 to provide E-Access EVPL service between UNI and ENNI. ENNI service multiplexing is based on 802.1ad tag 150, and

This option incorrectly configures both PE-1 and PE-2 to expect double-tagged frames (`encapsulation dot1q 10 second-dot1q 150`) and to pop two tags, which does not align with the requirement for single-tagged UNI and ENNI interfaces.

Similar to A, this option incorrectly uses double-tag encapsulation. Additionally, `rewrite ingress tag push dot1q 10 symmetric` would add a tag instead of removing the customer's tag on ingress.

On PE-1, `encapsulation dot1q 10` correctly matches the single 802.1q tag from the UNI, and `rewrite ingress tag pop 1 symmetric` removes this tag before the frame enters the MPLS pseudowire. On PE-2, `encapsulation dot1ad 150` correctly matches the single 802.1ad tag from the ENNI, and `rewrite ingress tag pop 1 symmetric` also removes this tag. This ensures clean frames are sent over the pseudowire and the correct tags are re-applied symmetrically for egress.

While the encapsulation and rewrite logic for PE-1 and PE-2 are individually correct for their respective interfaces, the `xconnect` destination IP addresses are typically reversed for a direct pseudowire between PE-1 and PE-2. However, given C is the correct answer, the encapsulation and tag rewrite logic are the primary differentiators here.