When does the overtaking prohibition end?
A)When you reach the narrowing.
B)When you exit the narrowing.
C)When you pass the vertical of the 'end of overtaking prohibition' sign.Correct
In the case of the signs in the question (Image A), the overtaking prohibition will end when we encounter the 'end of overtaking prohibition' or 'end of prohibitions' sign, and not when the danger due to the narrowing ends.
On the other hand, if the prohibition sign were a 'Maximum speed' sign (Image B), the maximum speed prohibition will indeed end when the danger ends.