You are underway and pass by a lighthouse.Its light，which was white since you first sighted it，changes to red．This means（）.<br>A:The light is characterized as alternately flashing<br>B:The lighthouse has lost power and has switched to emergency lighting<br>C:It is the identifying light characteristic of the lighthouse<br>D:You have entered an area of shoal water or other hazard

You are underway and pass by a lighthouse.Its light，which was white since you first sighted it，changes to red．This means（）.
A:The light is characterized as alternately flashing
B:The lighthouse has lost power and has switched to emergency lighting
C:It is the identifying light characteristic of the lighthouse
D:You have entered an area of shoal water or other hazard

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