Jquery val() not working in ie for dynamically added option

rahul

i am generating options for my dropdown by jquery ajax method, filling it by db.

$.ajax({
        type: "POST",
        url: pageUrl + '/FillAssignee',
        data: {},
        contentType: "application/json; charset=utf-8",
        dataType: "json",
        success: function (response) {
                        for (var i = 0; i < response.d.length; i++) {
                            $('#SelectAssignee').append($("<option></option>").val(response.d[i]['Value']).html(response.d[i]['Text']));
                        }
                  }            
      });

it’s works fine. only problem is that first value not got selected by default on ie. so for that i used many options

1. $('#SelectAssignee").val();
2. $('#SelectAssignee option:first').attr('selected','selected');
3. $('#SelectAssignee option:first').prop('selected',true);

how to get it work please help me out.

Thanks in advance.