Which of the following routing configuration options can achieve this function?

In the network shown in the figure, the administrator first completes the routing configuration as shown in the options, and then enables MPLS and LDP functions on all devices and interconnected interfaces of R1-R3, so as to realize the traffic from PC1 to PC2 forwarding based on MPLS in the network.

Which of the following routing configuration options can achieve this function?
A . # R1
Bgp 65000
Router-id 1.1.1.1
Peer 3.3.3.3 as-number 65000
Peer 3.3.3.3 connect-interface LoopBack 0network 10.1.1.024
# R3
Bgp 65000
Router-id 3.3.3.3
Peer 1.1.1.1 as-number 65000
Peer 1.1.1.1 connect-interface LoopBack 0network 10.3.3.024
B . # R1
Ospf 1
Area 0
Network 1.1.1.10.0.0.0
Network 10.1.12.00.0.0.255bgp 65000
Router-id 1.1.1.1
Peer 3.3.3.3 as-number 65000
Peer 3.3.3.3 connect-interface LoopBack 0network 10.1.1.024
Ip ip-prefix 1 index 10 permit 10.3.3.024route recursive-lookup tunnel ip-prefix 1
# R2
Ospf 1
Area 0
Network 2.2.2.20.0.0.0
Network 10.1.12.00.0.0.255
Network 10.1.23.00.0.0.255
# R3
Ospf 1
Area 0
Network 3.3.3.30.0.0.0
Network 10.1.23.00.0.0.255bgp 65000
Router-id 3.3.3.3
Peer 1.1.1.1 as-number 65000
Peer 1.1.1.1 connect-interface LoopBack 0
Network 10.3.3.024
Ip ip-prefix 1 index 10 permit 10.1.1.024route recursive-lookup tunnel ip-prefix 1
C . # R1
Ospf 1
Area 0
Network 1.1.1.10.0.0.0
Network 10.1.12.00.0.0.255
Network 10.1.1.00.0.0.255
# Ospf 1
Area 0
Network 2.2.2.20.0.0.0
Network 10.1.12.00.0.0.255
Network 10.1.23.00.0.0.255
# R3 Ospf 1
Area 0
Network 3.3.3.30.0.0.0
Network 10.1.23.00.0.0.255
Network 10.3.3.00.0.0.255
D . # R1
Ospf 1
Area 0
Network 1.1.1.10.0.0.0
Network 10.1.12.00.0.0.255
# R2
Ospf 1
Area 0
Network 2.2.2.20.0.0.0
Network 10.1.12.00.0.0.255
Network 10.1.23.00.0.0.255
# R3
Ospf 1
Area O
Network 3.3.3.30.0.0.0
Network 10.1.23.00.0.0.255

View Answer

Answer: B