Slightly different for multiple-choice:
<script type="text/javascript" charset="utf-8">
$(document).ready(function(){
var qID = {QID};
var NPSreason = $('#question'+qID+'');
// Insert some items in the list
$('.subquestions-list', NPSreason).prepend('<li>CUSTOMER SERVICE PERSON:</li>');
$('.subquestions-list li:eq(4)', NPSreason).after('<li style="padding-top:1em;">RESTAURANT:</li>');
$('.subquestions-list li:eq(9)', NPSreason).after('<li style="padding-top:1em;">PRODUCT:</li>');
});
</script>