When the automatic ticket vending machine is out of service, what should station officers do?

A、AstationofficershouldadvisethepassengertouseICCARDiftheautomaticticketvendingmachineisoutofservice.;
B、Astationofficershouldadvisethepassengertobuyticketsattheticketboothiftheautomaticticketvendingmachineisoutofservice.;
C、Astationofficershouldadvisethepassengertousemobilepaymentiftheautomaticticketvendingmachineisoutofservice.;
D、Astationofficershouldadvisethepassengerstotakeothertransportationspolitely.