![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
要对元素的左右边框设置为1px宽的黑色单实线,以下选项正确的是? A. border-left:1px solid #000; border-right:1px solid #000; B. border:1px solid #000; border-top:0; border-bottom:0; C. border-left:1px solid #000; border:1px solid #000; D. border-right:1px dotted #000; border-left:1px solid #000;