What is the first step in BGP route selection?（）

A. The local router prefers the route with the shortest AS Path.
B. The local router verifies that it has a route to the BGP Next Hop IP address.
C. The local router prefers the route from the peer with the lowest peer ID address.
D. The local router prefers the route learned from an EBGP peer over a route learned from an IBGP peer.