As a general rule, is overtaking prohibited at level crossings or in their vicinity?

As a general rule, is overtaking prohibited at level crossings or in their vicinity?
A)No.
B)At level crossings yes, but not in their vicinity.
C)Yes.Correct
Overtaking is prohibited at level crossings and in their vicinity. However, this prohibition does not apply when the overtaking is carried out, after giving appropriate audible or visual signals, of two-wheeled vehicles which, due to their small size, do not obstruct lateral visibility.