Assuming that all BGP neighbor relationships have been formed and that the attributes have not been changed on any of the routers, which configuration accomplish task?

Refer to the exhibit.

An engineer must ensure that all traffic leaving AS 200 will choose Link 2 as an entry point.

Assuming that all BGP neighbor relationships have been formed and that the attributes have not been changed on any of the routers, which configuration accomplish task?
A . R3(config)#route-map PREPEND permit 10
R3(config-route-map)#set as-path prepend 200 200 200
R3(config)#router bgp 200
R3#(config-router)#neighbor 10.1.1.1 route-map PREPEND out
B. R4(config)#route-map PREPEND permit 10
R4(config-route-map)#set as-path prepend 100 100 100
R4(config)#router bgp 200
R4(config-router)#neighbor 10.2.2.2 route-map PREPEND in
C. R4(config)#route-map PREPEND permit 10
R4(config-route-map)#set as-path prepend 200 200 200
R4(config)#router bgp 200
R4(config-router)#neighbor 10.2.2.2 route-map PREPEND out
D. R3(config)#route-map PREPEND permit 10
R3(config-route-map)#set as-path prepend 100 100 100
R3(config)#router bgp 200
R3(config-router)#neighbor 10.1.1.1 route-map PREPEND in

View Answer

Answer: A

Explanation:

R3 advertises BGP updates to R1 with multiple AS 100 so R3 believes the path to reach AS 200 via R3 is farther than R2 so R3 will choose R2 to forward traffic to AS 200.