When the automatic ticket vending machine is out of service, what should station officers do?
A.
A station officer should advise the passenger to use IC CARD if the automatic ticket vending machine is out of service.
B.
A station officer should advise the passenger to buy tickets at the ticket booth if the automatic ticket vending machine is out of service.
C.
A station officer should advise the passenger to use mobile payment if the automatic ticket vending machine is out of service.
D.
A station officer should advise the passengers to take other transportations politely.