单项选择题

A.〈el-row〉〈el-col :span="1"〉〈/el-col〉〈el-col :span="2"〉〈/el-col〉〈/el-row〉
B.〈el-row〉〈el-col :span="4"〉〈/el-col〉〈el-col :span="8"〉〈/el-col〉〈/el-row〉
C.〈el-row〉〈el-col :span="8"〉〈/el-col〉〈el-col :span="16"〉〈/el-col〉〈/el-row〉
D.〈el-row〉〈el-col :span="16"〉〈/el-col〉〈el-col :span="8"〉〈/el-col〉〈/el-row〉