Refer to the exhibit. What OSPF network statements are required for the router B to advertise the three networks that are attached?
router ospf 1
network 10.0.0.0 0.0.0.255 area 0
router ospf 1
network 10.1.1.0 0.3.255.255 area 0
network 10.10.1.0 0.255.255.255 area 0
network 10.20.1.0 0.255.255.255 area 0
router ospf 1
network 10.1.1.0 0.0.0.3 area 0
network 10.10.1.0 0.0.255.255 area 0
network 10.20.1.0 0.0.255.255 area 0
router ospf 1
network 10.1.1.0 0.0.0.3 area 0
network 10.10.1.0 0.0.0.255 area 0
network 10.20.1.0 0.0.0.255 area 0
