Refer to the exhibit. An engineer is designing a BGP solution for a client that peers with ISP1 for full Internet connectivity and with ISP2 for direct exchange of routes for several third parties. Which action, when implemented on the edge routers, enables the client network to reach the Internet through ISP1?
A. Run an eBGP session within different VRFs for each ISP.
B. Advertise a default route for downstream routers within the client network.
C. Apply the AS-path prepend feature for ISP2.
D. Apply route filtering such that the client advertises only routes originated from its own AS.
