A service provider network is currently divided into five IGP domains; four IS-IS domains and one OSPFv2 domain. Because of customer demand, it has been decided to implement Cisco MPLS TE tunnels using a centralized offline path calculation system. Which method provides a way to distribute the required information to the path calculation system? 

Answer options:

A. Convert the OSPFv2 domain to a new IS-IS instance.
B. Use RSVP-TE IS-IS/OSPFv2 extensions to distribute the information.
C. Use BGP LS to distribute information across the domains.
D. Perform mutual redistribution between all IGP domains.

C