This sign indicates that:

A)There is a speed camera on a conventional road.
B)It indicates the presence of a pedestrian crossing.
C)There is a speed control device at a point or stretch of motorway or dual carriageway, which may include the maximum speed and informational supplementary panels.Correct
The sign provides information about a speed control on a motorway or dual carriageway. It may display the maximum permitted speed and supplementary panels with additional information about the stretch, allowing drivers to comply with speed regulations and improve road safety.