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