If there is a square traffic light with a green arrow above the lane you are travelling in, must you obey a stop sign or a give way sign?

If there is a square traffic light with a green arrow above the lane you are travelling in, must you obey a stop sign or a give way sign?
A)No, because the green arrow gives right of way.
B)No, because the traffic light takes priority over vertical signs.
C)Yes.Correct
A green light in the shape of a downward-pointing arrow indicates that travel is permitted in the lane over which it is lit. This authorisation to use the lane does not exempt you from the obligation to stop at a circular red light or to obey any other sign or road marking that requires you to stop or give way.