【多选题】When the train is arriving and passengers leave the station, a passenger can’t pass the ticket gate, what should a station officer do?
A.
If the passenger holds a one-way ticket, the station officer should remind the passenger to insert the ticket in the slot of the machine for recycling.
B.
If the passenger doesn’t know how to swipe the stored-value card, the station officer should show him how.
C.
If the passenger doesn’t know how scan the QR code on the mobile app, the station officer should show him how.
D.
The station officer should open the side door and let the passenger leave the station directly.