"A MOMENT’S INATTENTION CAUSES ACCIDENTS" (Line 2, Para. 1) is a self-defeating warning because ______. In what condition does

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问题 "A MOMENT’S INATTENTION CAUSES ACCIDENTS" (Line 2, Para. 1) is a self-defeating warning because ______.
In what condition does one need to stop after an accident?

选项 A、When he has been injured by somebody.
B、When his car has been damaged.
C、When he has injured somebody else.
D、When he has witnessed the accident.