Refer to the exhibit. Routers R1 and R2 are to be configured as VoIP gateways. On the basis of the information in the exhibit, which interface FastEthernet0/0 configuration would be valid?

A.
R1(config-if)# dial-peer voice 1 pots
R1(config-dial-peer)# destination-pattern 1111
R1(config-dial-peer)# port 1/0/0

B.
R1(config-if)# dial-peer voice 1 voip
R1(config-dial-peer)# destination-pattern 1111
R1(config-dial-peer)# port 1/0/0

C.
R2(config-if)# dial-peer voice 1 pots
R2(config-dial-peer)# destination-pattern 1111
R2(config-dial-peer)# port 1/0/0

D.
R2(config-if)# dial-peer voice 1 voip
R2(config-dial-peer)# destination-pattern 1111
R2(config-dial-peer)# port 1/0/0