给出以下语句: 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(); } } 下面的运行结果中正确的是______。