Which of the following best describes the purpose of advertise-external?
A . It enables a BGP speaker to advertise multiple external routes to iBGP peers.
B . It enables a BGP speaker to advertise its best external route to iBGP peers when the best overall route is internal.
C . It enables a BGP speaker to advertise its best external route to eBGP peers without an import policy.
D . It enables a BGP speaker to advertise its best internal route to eBGP peers without an export policy.
Answer: B