dropdown list bind in MVC using angularjs

Can any one tell what is the error???

$scope.country = response;

Here value is coming properly but in dropdown list data is not binding ..it showing undefined....

ViewBag.Title = "Index";

}

Index

============Controller Code=======================

public class Country

{

public int countryId { get; set; }

public string countryName { get; set; }

}

[HttpGet]

public JsonResult GetCountry()

{

SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["con"].ToString());

con.Open();

SqlCommand cmd = new SqlCommand("getAllCountry", con);

cmd.CommandType = CommandType.StoredProcedure;

SqlDataAdapter adp = new SqlDataAdapter(cmd);

DataTable dt = new DataTable();

adp.Fill(dt);

con.Close();

DataSet ds = new DataSet();

ds.Merge(dt);

List listrs = new List();

foreach (DataRow dr in ds.Tables[0].Rows)

{

listrs.Add(new Country

{

countryId = Convert.ToInt32(dr["countryId"]),

countryName = dr["countryName"].ToString(),

});

}

return Json(listrs, JsonRequestBehavior.AllowGet);

}

==============