Sub array of sub array is undefined

i have a json get request whose response comes back as:

but if i use $http or restangular and console log the response or put the result on the screen, the property Options are undefined though i can see it in firebug. but if i use jquery.get() the property Options are populated correctly. i tried renaming the Options property but that didn't work either. this is vanilla restangular -- nothing special in the config. does anyone know whats going on?

here's the code:

// this works
 $.get('/api/dynamicproducts/5501f37b97c92c53d8eb54e7', function(data) { 
     console.log(data);
 });

// this doesn't
vm.product = restangular.one("dynamicproducts", '5501f37b97c92c53d8eb54e7').get().$object;

// this doesn't
$http.get('/api/dynamicproducts/5501f37b97c92c53d8eb54e7').success(function(data) {
    console.log(data);        
});

{
  "ProductName": "Online Form",
  "ProductProperties": [{
    "PropertyName": "Status",
    "Options": [{
      "Selected": false,
      "Text": "Status1",
      "Value": "1"
    }, {
      "Selected": false,
      "Text": "Status2",
      "Value": "2"
    }, {
      "Selected": false,
      "Text": "Status3",
      "Value": "3"
    }]
  }, {
    "PropertyName": "Publication",
    "Options": [{
      "Selected": false,
      "Text": "Publication1",
      "Value": "1"
    }, {
      "Selected": false,
      "Text": "Publication3",
      "Value": "3"
    }]
  }]
}