Prática CDL passenger endorsement

Your transit bus has a brake-door interlock that applies the service brakes when the rear door is open. At a layover, you want to step off for a minute. What does the CDL manual say?

• ASet the parking brake; the interlock does not replace it.
• BLeave the rear door open so the interlock holds the bus.
• CClose the door and rely on the transmission in neutral.
• DSet the interlock switch to 'hold' and step off.