please help me with my problem I'm a little new to angularjs, my problem is that I need to be able to set the default value in the select option when there is only one item because it's a dynamic select option, it has another dropdown with many items but it's okay , what is needed when only one item must be selected in the select option using ng-options

                    <select  class="form-control form"  ng-model="relatedTo" style="height: 40px;" ng-options="c.CUSTCODE as c.CUSTNAME + ' - ' + c.CUSTCODE for c in customers | filter:code" >  </select><span style="color:red" ng-show="type === 9 || type !== 9"></span>

ANGULARJS

                    $http.post('commandCenter.aspx/allCustomer', {}).then(
                        function onSuccess(response) {
                            $scope.customers = JSON.parse(response.data.d);
                            console.log($scope.customers); },
                        function onError(response) {
                            console.log('error !!! ');
                        });

Picture no.1 It's okay in this picture because he has a lot of list of items.

Picture no.2 When there is only one item, it must be default or selected.