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单项选择题关于嵌套列的用法,错误的是()

A、<div class=“row”><br><div class=“col-sm-1”>

B、<div class=“col-sm-1”><br><div class=“row”><br> 

C、<div class=“row”><br><div class=“container”><br><div class=“col-xs-1”><br> 

D、<div class=“container”><br><div class=“row”><br><div class=“col-xs-1”>

  • C
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