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>{

A.0
B.1
C.2
D.3
E.4
F.Compilation fails.
G.An exception is thrown at runtime.