The correct answer is: A. 400 and 600 meters
Warning boards
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The correct answer is: A. 400 and 600 meters
Warning boards
11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTubeOption B is incorrect because it states that warning boards shall be fixed at a distance of 500 and 250 meters. This is not the correct distance.
Option C is incorrect because it states that warning boards shall be fixed at a distance of 300 and 600 meters. This is not the correct distance.
Option D is incorrect because it states that none of the above options are correct. This is not the correct answer.