ng-options how to set first select always blank

Question

I am using angularjs in a project and in which I am using ng-options for generating .

Initially when the pages reload and no option element is selected the html gene

Answer 1

Controller

$scope.item = '';

$scope.itemlist = {
   '' = '',
   'Item 0' = 1,
   'Item 1' = 2,
   'Item 2' = 3
};

HTML