Analyze the following code: public class A { private String s; public A(String s) { System.out.println("A1:"+s); } public static void main(String[] args) { A a = new AO; System.out.println("A2:"+a.s); } } The program has a compile crror because 's is defined as a private variable inside class 'A: The program has a compile error because 'a.s' is not allowed. The program has a compile error because 'A' does not have a default constructor. The program has a compilc error because 'main' cannot instantiate an object from class 'A