Refer to the Exhibit.

All ISP networks shown in the exhibit contain many BGP speaking routers. You are in charge of
ISP A. You must ensure that customer Y sends their traffic to you over the directly connected link
but customer Y is not used for transit into your network. What do you do to accomplish this?

A.
Advertise routes to customer Y with a higher MED than routes advertised to customer X.

B.
Advertise routes to customer Y with the well-known no-advertise community.

C.
Advertise routes to customer Y with your AS number prepended four times.

D.
Advertise routes to customer Y with the well-known no-export community.

Explanation: