答案及解析：[单选题]Any point in frozen area is p far away from its nearest site in frozen are and r far away from the s

问题：

[单选题]Any point in frozen area is p far away from its nearest site in frozen are and r far away from the sweepline. There is another site in unscanned area which is q far away from it. Then it must be that
frozen区域中的任意一点到frozen区域里最近的site的距离为p，到扫描线的距离为r，到未扫描区域中某点的距离为q。那么一定有
Ar < p < q
Bq < p < r
Cp < r < q
Dp < q < r