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？（）
- A Point p = new Point（）；
- B Line.Point p = new Line.Point（）；
- C The Point class cannot be instatiated at line 15.
- D Line 1 = new Line（） ； 1.Point p = new 1.Point（）；