Coral atolls，or a chain of islands at right angles to the radar beam，may show as a long line rather than as individual targets due to （）.<br>A:the effects of beam width<br>B:limitations on range resolution<br>C:the pulse length of the radar<br>D:the multiple-target resolution factor

Coral atolls，or a chain of islands at right angles to the radar beam，may show as a long line rather than as individual targets due to （）.
A:the effects of beam width
B:limitations on range resolution
C:the pulse length of the radar
D:the multiple-target resolution factor

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