Identifiers declared within a class have O a. local scope O b. class scope O c. block scope O d. None of these. Given the following code, there would be an error because public class MyClass { private int x; public MyClass(int i) x = 1; } } 11- public class DemoClass { public static void Main(String args[]). { MyClass t1 = new MyClass(10); MyClass t2 = new MyClass( 20 ); Console.WriteLine(ti.getx()+""+ t2.getx(); } } Select one: O a, the constructor must be without parameters O b. There is no "getxo "method c. the instance variable x is declared private and cannot be accessed directly od, the constructor have to return a value of x