请选出正确答案class Parent { String one, two; public Parent(String a, String b){ one = a; two = b; }public void print(){ System.out.println(one); }}public class Child extends Parent { public Child(String a, String b){ super(a,b); } public void print(){ System.out.println(one + " to " + two); } public static void main(String arg[]){ Parent p = new Parent("south", "north"); Parent t = new Child("east", "west"); p.print(); t.print(); }}