题目内容

为避免在嵌套的条件语句if-else中产生二义性，C语言规定：else子句总是与（）配对。

A. 缩排位置相同的if
B. 其之前最近的且未配对的if
C. 其之后最近的且未配对的if
D. 同一行上的if

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