单项选择题X 纠错
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”>
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单项选择题
A.<div class="container"><br><div class="row">
B.<div class="row"><br><div class="col-md-1">
C.<div class="row"><br><div class="container">
D.<div class="col-md-1"><br><div class= "row">