How to get SPFieldChoice values using rest api SharePoint 2013?

I have a choice field in my list. I can get it values using server object model by following way

List<string> fieldList;

SPList spList = spWeb.Lists[listName];

SPFieldChoice field = (SPFieldChoice)spList.Fields[fieldName];

fieldList = new List<string>();

foreach (string str in field.Choices){

             fieldList.Add(str);
         }

Now I need it badly using rest api. Is it possible using rest api?