單項選擇題

Given the following code:    
1) class Parent {    
2) private String name;    
3) public Parent(){}    
4) } 
5) public class Child extends Parent {    
6) private String department; 
7) public Child() {} 
8) public String getValue(){ return name; }    
9) public static void main(String arg[]) {    
10) Parent p = new Parent();    
11) } 
12) } 
Which line will cause error?()   

A. line 3
B. line 6
C. line 7
D. line 8
E. line 10

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