我将如何使用jQuery删除重复项
<option value="English">English</option>
<option value="English">English</option>
<option value="English">English</option>
<option value="Geology">Geology</option>
<option value="Geology">Geology</option>
<option value="Information Technology">Information Technology</option>
<option value="Music">Music</option>
<option value="Music">Music</option>
<option value="Zoology">Zoology</option>