You are travelling in the left lane and the red X signal lights up. What should you do?

A)Stop at the next junction.
B)Stop under the red X.
C)Change lanes as quickly as possible.Correct
A red X-shaped light indicates that it is prohibited to occupy the lane above which it is displayed. Drivers of vehicles travelling in a lane where this type of red light comes on must leave it as quickly as possible and under safe conditions.
A green downward-pointing arrow-shaped light indicates that it is permitted to travel in the lane above which it is lit. This authorisation to use the lane does not exempt the obligation to stop at a circular red light or, by exception to the provisions on the order of priority, to obey any other sign or road marking that requires stopping or giving way, or in their absence, to comply with the general rules on right of way.
A white or yellow intermittent or fixed arrow-shaped light, 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. These square traffic signals do not exempt compliance with the rest of the signage.
A green downward-pointing arrow-shaped light indicates that it is permitted to travel in the lane above which it is lit. This authorisation to use the lane does not exempt the obligation to stop at a circular red light or, by exception to the provisions on the order of priority, to obey any other sign or road marking that requires stopping or giving way, or in their absence, to comply with the general rules on right of way.
A white or yellow intermittent or fixed arrow-shaped light, 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. These square traffic signals do not exempt compliance with the rest of the signage.