You fly to Phoenix to cover for another study nurse who is on family leave. You accidentally leave your laptop on the plane while de$-$boarding. The laptop is recovered by one of the flight attendants, and you retrieve it from Lost and Found. You feel secure that data was not breached because:

$($a$)$ Your laptop was locked.

$($b$)$ Fingerprint technology is used to access software systems.

$($c$)$ Data is encrypted once it is entered.

$($d$)$ All of the above