Popular Selec2 with Ajax + ASP 3

I'm already trying to populate a select ajax options, among the various options I found the plugin selec2 and I'm trying like this:

$(function () {

    $(".disciplina").select2({
        language: "pt-BR",
        placeholder: "Disciplina",
        allowClear: true,
        minimumInputLength: 0,
        ajax:{
            url: "busca.asp",
            type: "post",
            dataType: "json",
            delay: 150,
            data: function(params){
                return{
                    text: params.term
                };
            },
            processResults: function(data, params){
                params.page = params.page || 1;     
                return{
                    results: data,
                    pagination:{
                        more: (params.page * 30) < data.total_count
                    }
                };
            },
            cache: true
        }
    });

});

<form action="" method="post">
    <select class="disciplina"></select>
</form>

But I had a question, what kind of data should I return in the url: base_url ("search.asp")?

As you can see use asp3 in this project and there is no solution to bring an array in json format as in Php, so I got a kick.

  

set rs = Conn.Execute ("SELECT discipline_id, discipline FROM discipline ORDER BY ASC discipline;")   while not rs.EOF       response.write ("{" "discipline_id" ":" "" & rs ("discipline_id") & "", "" discipline "": "},")   rs.MoveNext   wend   rs.Close   set rs = Nothing

Help me, I'm going crazy already.