[单项选择] Given the configuration shown in the exhibit， which configuration object would be used to associate bothNancy and Walter with firewall user authentication within a security policy？（） profile ftp-users { client nancy { firewall-user { password "$9$lJ8vLNdVYZUHKMi.PfzFcyrvX7"； ## SECRET-DATA } } client walter { firewall-user { password "$9$a1UqfTQnApB36pBREKv4aJUk.5QF"； ## SECRET-DATA } } session-options { client-group ftp-group； } } firewall-authentication { pass-through { default-profile ftp-users；ftp { banner { login "JUNOS Rocks!"； } } } } A. ftp-group B. ftp-users C. firewall-user D. nancy and walter
