Which of the following methods of marking a load overhanging more than 0.5 m from the rear outline of the truck is correct?

In accordance with the provisions of the Road Traffic Act, a load projecting from the rear of a lorry by more than 0.5 metres must be correctly marked. These regulations specify that this marking should consist of alternating white and red stripes, as illustrated in figure A. The total surface area of these stripes, placed on a board or directly on the load, must be at least 1000 cm².