Given：

Which two methods， inserted independently at line 17， correctly complete the Sales class？（）

A.int foo（） { /* more code here */ }
B.void foo（） { /* more code here */ }
C.public void foo（） { /* more code here */ }
D.private void foo（） { /* more code here */ }
E.protected void foo（） { /* more code here */ }

A.Compilation fails.
B.An exception is thrown at runtime.
C.The code executes normally and prints "bar".
D.The code executes normally， but nothing prints.

A.Cat
B.Dog
C.Compilation fails.
D.The code runs with no output.
E.An exception is thrown at runtime.