【2017Web前端面试题】请阅读以下代码:
<div style="width:400px; height:200px;">
<span style="float:left; width:auto; height:100%;">
<i style="position:absolute;float:left; width:100px; height:50px;">hello</i>
</span>
</div>
问题:span 标签的width 和 height 分别为多少?
A.width = 0px,height = 0px
B.width = 400px,height = 200px
C.width = 100px,height = 50px
D.width = 0px,height = 200px