A.<a-input placeholder="请输入..."><a-icon slot="prefix"type="user"/></a-input>B.<a-input placeholder="请输入..."slot="prefix"><a-icon type="user"/></a-input>C.<a-input placeholder="请输入..."slot="prefix"type="user"><a-icon /></a-input>D.以上都不对
A.输入框B.选择器C.单选框D.以上都不对
A.<a-row><a-col :span="12":gutter="6>col-12col-offset-6</a-col></a-row>B.<a-row><a-col :gutter="12":offset="6>col-12col-offset-6</a-col></a-row>C.<a-row><a-col :span="12":offset="6>col-12col-offset-6</a-col></a-row>D.以上都不对