Should I use "]]>" or "//]]>" for closing a CDATA section into xHTML

I want to inline scripts or CSSs into XHTML without escaping special characters.

I can do that using a CDATA marked section.

According to http://www.w3.org/TR/xhtml1/#h-4.8 the CDATA section can be defined as:

   <script type="text/javascript">
      <![CDATA[
         ... unescaped script content ...
      ]]>
   </script>

Then, according to http://www.w3schools.com/TAGS/tag_script.asp, the CDATA can look like:

   <script type="text/javascript"><![CDATA[
     // some code
   //]]></script>

Which method for closing the CDATA section is better? ]]> or //]]> ?