Which configuration must the engineer apply to the two routers to implement session protection on the link?

Refer to the exhibit. Router 1 and router 2 are running OSPF Area 0. The router logs on both routers show that the LDP link has flapped. Which configuration must the engineer apply to the two routers to implement session protection on the link?
A. Router 1(config)# ip cef distributed
Router 1(config)# mpls ldp session protection global
Router 2(config)# ip cef distributed
Router 2(config)# mpls ldp session protection global
B. Router 1(config)# ip cef distributed
Router 1(config)# interface gigabitethernet 0/0
Router 1(config-if)# ip address 192.168.1.1 255.255.255.0
Router 1(config)# mpls ldp session protection
Router 2(config)# interface gigabitethernet 0/0
Router 2(config-if)# ip address 192.168.1.2 255.255.255.0
Router 2(config)# mpls ldp session protection
C. Router 1(config)# ip cef distributed
Router 1(config)# interface gigabitethernet 0/0
Router 1(config-if)# ip address 192.168.1.1 255.255.255.255
Router 1(config-if)# exit
Router 1(config)# mpls ldp session protection
Router 2(config)# ip cef distributed
Router 2(config)# interface gigabitethernet 0/0
Router 2(config-if)# ip address 192.168.1.2 255.255.255.255
Router 2(config-if)# exit
Router 2(config)# mpls ldp session protection
D. Router 1(config)# ip cef distributed
Router 1(config)# interface gigabitethernet 0/0
Router 1(config-if)# ip address 192.168.1.1 255.255.255.0
Router 1(config-if)# mpls label protocol ldp
Router 1(config-if)# mpls ip
Router 1(config-if)# exit
Router 1(config)# mpls ldp session protection
Router 2(config)# ip cef distributed
Router 2(config)# interface gigabitethernet 0/0
Router 2(config-if)# ip address 192.168.1.2 255.255.255.0
Router 2(config-if)# mpls label protocol ldp
Router 2(config-if)# mpls ip
Router 2(config-if)# exit
Router 2(config)# mpls ldp session protection