On this two-way road, which vehicles must keep a minimum separation of 50 meters from the vehicle in front when they do not intend to overtake?

A)All trucks, regardless of their MAM.
B)Passenger cars.
C)Vehicle combinations more than 10 meters long.Correct
# Explanation
On two-way roads, traffic regulations state that **vehicle combinations more than 10 meters long** must maintain a minimum distance of 50 meters from the vehicle in front, even when they do not intend to overtake. This rule applies to vehicle combinations (such as truck + trailer) exceeding this length, not to all trucks or passenger cars.