A network administrator wants to detect a login attack against a router. What IOS command can make the attack recorded in syslog server？（）

A.GFC-4 bits of generic flow control
B.Forward-explicit congestion notification（FECN）
C.VCI-16 bits of virtual channel identifier
D.CLP-1 bit of congestion loss
E.HEC-8 bit of header error control
F.ATM Discard Eligibility（DE）bit

A.lowest cost
B.highest bandwidth
C.lowest hop-count
D.path attributes
E.lowest delay