890.When a road traffic accident occurs, a breakdown warning sign or other clearly visible warning devicemust be placed behind the vehicle as required. Which of the following distances is correct?
(A) On anexpressway, 70 meters behind the accident site.
(B) On a freeway, 100 meters behind the accident site.
(C) On a road section with a maximum speed limit of 50 km/h or below, 20 meters behind the accidentsite.
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