As station officers, what should we do when there are too many passengers waiting for the train on the platform?
选项：

A:We should remind passengers to mind the gap between the train and the platform and get on first and then get off.;
B:We should advise passengers to move to the end tail/ head of the platform with fewer people.;
C:We should remind passengers not to force in the train while the doors are closing up.;
D:We should push in all the passengers stuck at the door and make sure that the door could be closed.