Twitter bootstrap选择选择器添加“选择一个”

Hi i'm using Bootstrap select, and i'm trying to add default option like Choose One

Here's my html code,

<div class="container">

  <h3>Bootstrap Select</h3>
  <select id="dataCombo" class="selectpicker">
    <option data-hidden="true">Choose One</option>
    <option value="one">One</option>
    <option value="two">Two</option>
    <option value="three">Three</option>
    <option value="four">Four</option>
    <option value="five">Five</option>
    <option value="six">Six</option>
  </select>
</div>

Also i'm using jqueryvalidation.org plugin for validation. On form submit above select option is not validating and i'm getting choose one if i print_r all posted data

Did anyone know where i'm going wrong ?

<div class="container">
    <h3>Bootstrap Select</h3>
    <select id="dataCombo" class="selectpicker">
        <option value="" disabled selected>Choose One</option>
        <option value="one">One</option>
        <option value="two">Two</option>
        <option value="three">Three</option>
        <option value="four">Four</option>
        <option value="five">Five</option>
        <option value="six">Six</option>
    </select>
</div>

Is this what you have wanted ...