title: How to retrieve the text inside dropdown list by xpath
body: <p>I want to specify xpath to an element of my web page.</p>
  
  <pre><code>&lt;select id=groupSelect&gt;
     &lt;option value="data" &gt;First value&lt;/option&gt;
      &lt;option value="data" &gt;second value&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>I want to get the "First value" which is the text inside option. but I do not know how to get the text.</p>
  
  <pre><code>By.xpath("//select[@id='groupSelect']/option[@value=???']"))
  </code></pre>