【单选题】

pErCEntAgE oF stuDEnts who rEportED spEnDing timE on homEwork
AnD wAtChing tElEvision

whiCh oF thE Following ExprEssEs thE ArEA oF A Cir-ClE in tErms oFC, its CirCumFErEnCE

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根据网考网移动考试中心的统计，该试题：
80%的考友选择了A选项
8%的考友选择了B选项
4%的考友选择了C选项
8%的考友选择了D选项