A flashing light is a light that（）.<br>A:flashes at regular intervals at a frequency of 120 flashes or more per minute<br>B:is yellow in color<br>C:is visible over an arc of the horizon of not less than 180°nor more than 225°<br>D:All of the above

A flashing light is a light that（）.
A:flashes at regular intervals at a frequency of 120 flashes or more per minute
B:is yellow in color
C:is visible over an arc of the horizon of not less than 180°nor more than 225°
D:All of the above

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