If a passenger with an excessive large suitcase wants to leave the station but he can’t get through ticket gate, what should we do as the station officers?

A、He or she should open the side door after the passenger touches out and assist the passenger to get through.;
B、He or she should remind the passenger with huge suitcase to take the lift for safety.;
C、He or she should tell the staff in the station to assist the passenger.;
D、He or she should let the passenger leave the station directly.