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10. class Line { 
11. public class Point { public int x，y； } 
12. public Point getPoint（） { return new Point（）； } 
13. } 
14. class Triangle { 
15. public Triangle（） { 
16. // insert code here 
17. } 
18. } 
Which code， inserted at line 16， correctly retrieves a local instance of a Point object？（） 

10. class Line { 
11. public static class Point { } 
12. } 
13. 
14. class Triangle { 
15. // insert code here 
16. } 
Which code， inserted at line 15， creates an instance of the Point class defined in Line？（）