What do these signs indicate?

What do these signs indicate?
A)A speed limit of 40 kilometres per hour for vehicles that are going to turn right.
B)A speed limit of 40 kilometres per hour on a through road.
C)The speed limit on a stretch frequently used by children.Correct
The lower sign in the question prohibits travelling at a speed, in kilometres per hour, higher than that indicated on the sign. When placed on the same post as a hazard warning sign or on the same panel as it, it indicates that the prohibition ends when the indicated hazard ends — in this case, an area frequently used by children.