At a level crossing, what should you do if the barrier is going up?

At a level crossing, what should you do if the barrier is going up?
A)Pass when the rest of the vehicles do, whether the barrier moves or not.
B)Pass when, due to the height, the barrier allows it.
C)Stop behind the other vehicles, until the barrier rises completely and allows passage.Correct
When arriving at a level crossing or movable bridge that is closed or with the barrier or half-barrier in motion, drivers and users must stop one behind the other in the corresponding lane until they have a clear passage.