Refer to the exhibit. What is the relationship between Router 1 and Router 2?
A. Router 1 centrally learns the topology of the network to aid in SR-TE path selection, and Router 2 is a node that feeds Router 1 topology information
B. Router 1 and Router 2 are participating in SR-TE tunnels and are both head-end routers
C. Router 1 and Router 2 centrally learn the topology of the network to aid in SR-TE path selection for peers
D. Router 2 is the head-end router in an SR-TE tunnel, and it is learning topology of the network from the PCE enabled on Router 1
It think it should be A. By configuration router 1 is the PCE. The PCE receives topology information from its clients (PCC). The PCE instructs the clients about the path to follow.