Event handler on chosen option : <p>I need to handle alert event on chosen option.</p>

<pre><code>  &lt;select&gt;
       &lt;option value="1"&gt;A&lt;/option&gt;
       &lt;option value="2"&gt;B&lt;/option&gt;
       &lt;option value="3"&gt;C&lt;/option&gt;
       &lt;option value="3"&gt;D&lt;/option&gt;
   &lt;/select&gt;
</code></pre>

<p>For ex., if I choose "B" option, I want alert like "Chosen option is: B", etc...</p>

<p>Thank you!</p>
