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（）；    
}    
} 
Which of the following is correct？（）

A. Cause error during compilation. 
B. south         east 
C. south to north     east to west    
D. south to north      east    
E. south     east to west