271.A sign prohibiting entry of vehicles with four or more wheels is posted at a road entrance. Which of thefollowing vehicles may enter that road section? (A) A private passenger car, because it is a small vehicleand not within the scope of the restriction. (B) A standard heavy motorcycle, because it is not a vehiclewith four or more wheels. (C) A light truck, because it is used for cargo transport and differs in nature fromordinary automobiles.