A$.$ Security infractions do not have to be reported to your security manager, but security violations do$.$

B$.$ A security violation involves an incident that is expected to result in loss, compromise, or suspected compromise of classified information, whereas with a security infraction, this concern is ruled out.

C$.$ Security infractions and violations both require an initial inquiry and an in$-$depth investigation.

D$.$ Not A$,$ B$,$ or C