Which Cisco IOS XR configuration is missing to complete the configuration task of enabling BFD with only the OSPF peer over the gi0/3/0/1 interface in area 0?

Refer to the exhibit.

Which Cisco IOS XR configuration is missing to complete the configuration task of enabling BFD with only the OSPF peer over the gi0/3/0/1 interface in area 0?
A . bfd fast-detect also needs to be enabled globally under router ospf 100. RP/0/RSP0/CPU0:P1(config-ospf)#bfd fast-detect
B . bfd fast-detect also needs to be enabled for the OSPF area under area 0. RP/0/RSP0/CPU0:P1(config-ospf-ar)#bfd fast-detect
C . bfd fast-detect also needs to be enabled for the OSPF interface under area 0 interface gi0/3/0/1. 
RP/0/RSP0/CPU0:P1(config-ospf-ar-if)#bfd fast-detect
D . bfd fast-detect also needs to be enabled globally on the router. RP/0/RSP0/CPU0:P1(config#bfd fast-detect
E . bfd fast-detect also needs to be enabled on the gi0/3/0/1 interface under interface gi0/3/0/1. RP/0/RSP0/CPU0:P1(config-if)#bfd fast-detect

View Answer

Answer: C