Refer to the exhibit. During the process of configuring a virtual link to connect area 2 with the backbone area, the network administrator received this console message on R3: *Mar 1 00:2 5:01.084: %OSPF -4- ERRRCV: Received invalid packet: mismatch area ID, from backbone area must be virtual link but not found from 20.20.20.1, Serial 0 .How should the virtual link be configured on the OSPF routers to establish full connectivity between the areas?（）

• A、R1(config - router)# area 0 virtual - link 1.1.1.1  R3(config - router)# area 2 virtual - link 3.3.3.3
• B、R1(config - router)# area 1 virtual - link 2.2.2.2   R3(config - router)# area 1 virtual - link 2.2.2.2
• C、R1(config - router)# area 1 virtual - link 20.20 .20.2   R3(config - router)# area 1 virtual - link 30.30.30.2
• D、R1(config - router)# area 1 virtual - link 30.30.30.3   R3(config - router)# area 1 virtual - link 20.20.20.1
• E、R1(config - router)# area 1 virtual - link 3.3.3.3   R3(config - router)# area 1 virtual - link 1.1 .1.1