What is recursive lookup in BGP and how does it work?

What is recursive lookup in BGP and how does it work?
A . The router looks up the EBGP route and the EBGP next hop to reach a destination in the remote A
B . Then the router looks up the route to reach the EBGP next hop using the IBG
D . The router looks up the IBGP route and the IBGP next hop to reach a destination in the remote A
E . Then the router looks up the route to reach the IBGP next hop using the EBG
G . The router looks up the BGP route and the BGP next hop to reach a destination in the remote A
H . Then the router looks up the route to reach the BGP next hop using the IG
. The router looks up the route and the next hop to reach a destination in the remote AS using the IG
. Then the router looks up the route to reach the next hop using BG
. The router perform three routing lookups to determine the route to reach a destination in the remote A
. The first lookup is done using EBGP, the second lookup is done using IBGP, and the third lookup is done using the IG

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Answer: C