An engineer is implementing a Cisco MPLS TE tunnel to improve the streaming experience for the clients of a video-on-demand server. Which action must the engineer perform to configure extended discovery to support the MPLS LDP session between the headend and tailend routers?

A. Configure a targeted neighbor session. B. Configure an access list on the interface to permit TCP and UDP traffic. C. Configure a Cisco MPLS TE tunnel on both ends of the session. D. Configure the interface bandwidth to handle TCP and UDP traffic between the LDP peers.