191. Given: 

11. //insert code here

 12. private N min, max；

 13. public N getMin() { return min； } 

14. public N getMax() { return max； } 

15. public void add(N added) { 

16. if(min == null || added.doubleValue() ＜ min.doubleValue()) 

17. min = added； 

18. if(max == null || added.doubleValue() ＞ max.doubleValue()) 

19. max = added； 

20. } 

21. }

 Which two, inserted at line 11, will allow the code to compile? (Choose two.) (A) public class MinMax＜?＞{ (B) public class MinMax＜? extends Number＞{ (C) public class MinMax＜N extends Object＞{ (D) public class MinMax＜N extends Number＞{ (E) public class MinMax＜? extends Object＞{ (F) public class MinMax＜N extends Integer＞{