Which command sequence represents a correct processto establish OSPF peer authentication credentials?

A.
N7010-C2(config)# key chain OSPF
N7010-C2(config-keychain)# key 0
N7010-C2(config-keychain-key)# key-string

B.
N7010-C2(config)# key-chain 0
N7010-C2(config-key-chain)# key-name OSPF
N7010-C2(config-key-chain-key)# key-string

C.
N7010-C2(config)# key ring OSPF
N7010-C2(config-keyring)# key 0
N7010-C2(config-keyring-key)# key-string

D.
N7010-C2(config)# key-ring 0
N7010-C2(config-key-ring)# key-name OSPF
N7010-C2(config-key-ring-key)# key-string