What does this sign indicate?

A)It indicates the proximity of a movable bridge at 300 meters.
B)It indicates that the next exit is approximately 300 meters away on a motorway, dual carriageway or road for motor vehicles.Correct
C)It indicates the proximity of a level crossing with barriers on the right side.
The sign indicates on a motorway, dual carriageway or road for motor vehicles that approximately 300 meters ahead there is an exit on the right, since the diagonals are ascending from left to right. In addition, the sign will be located on the right side of the carriageway.
To indicate a movable bridge or a level crossing with or without a barrier, a beacon with a red diagonal is used.
The red bands on the sign indicate the distance at which we are from the danger that is signaled to us:
(PAC) - 3 bands Proximity (approximately 200 meters).
- 2 bands Approach (approximately 150 meters).
- 1 band Closeness (approximately 100 meters).
Also the side. If the lines run from bottom to top to the right, they will be on the right side; on the other hand, if the lines ascend toward the left side, on the left side.
(PAC) - 3 bands Proximity (approximately 200 meters).
- 2 bands Approach (approximately 150 meters).
- 1 band Closeness (approximately 100 meters).
Also the side. If the lines run from bottom to top to the right, they will be on the right side; on the other hand, if the lines ascend toward the left side, on the left side.