On which roads must you use the high beam headlights?

A)On any type of road, whenever necessary.
B)On urban roads, including through roads.
C)On interurban roads that are insufficiently lit.Correct
High beam or main beam headlights must be used by vehicles equipped with them when travelling at more than 40 km/h: - Between sunset and sunrise, on interurban roads that are insufficiently lit. - At any time of day, in tunnels, underpasses, and road sections affected by the Tunnel sign, that are insufficiently lit. However, low beam or dipped headlights shall be used: - By vehicles that do not have high beam headlights. - By those travelling with high beam headlights who could dazzle other road users. When travelling at a speed not exceeding 40 km/h, either low beam or high beam may be used. It is prohibited to use high beam headlights when the vehicle is stopped, parked, or within a built-up area.