What does the green arrow on a lane signal indicate?

A)That the lane is open and grants priority over other vehicles.
B)That the lane is open, except for heavy vehicles.
C)That the lane is open, but signs and right-of-way rules must be obeyed.Correct
A green light in the shape of a downward-pointing arrow indicates that it is permitted to travel in the lane above which it is lit. This authorisation to use the lane does not exempt drivers from the obligation to stop at a circular red light or, as an exception to the provisions on the order of precedence, to obey any other sign or road marking requiring them to stop or give way, or, in the absence of such signs, from complying with the general rules on right of way.
A red light in the shape of a cross indicates that the lane above which it is lit is prohibited to those vehicles at which the light is directed. Drivers of vehicles travelling in a lane above which a red light of this type is activated must leave it in the shortest possible time.
A white or yellow light in the shape of an intermittent or fixed arrow, not incorporated into a direction sign, placed above a lane and pointing downward obliquely, indicates to road users the need to safely merge into the lane towards which the arrow points, since the lane they are travelling in will be closed shortly.
A red light in the shape of a cross indicates that the lane above which it is lit is prohibited to those vehicles at which the light is directed. Drivers of vehicles travelling in a lane above which a red light of this type is activated must leave it in the shortest possible time.
A white or yellow light in the shape of an intermittent or fixed arrow, not incorporated into a direction sign, placed above a lane and pointing downward obliquely, indicates to road users the need to safely merge into the lane towards which the arrow points, since the lane they are travelling in will be closed shortly.