Given：

What is the result of calling search with a valid List implementation？ （）

A. doStuff x = 6 main x = 6
B. Compilation fails.
C. doStuff x = 6 main x = 7
D. An exception is thrown at runtime.
E. doStuff x = 7 main x = 6
F. doStuff x = 7 main x = 7

A. protected int blipvert（long x） { return 0； }
B. protected long blipvert（int x） { return 0； }
C. private int blipvert（long x） { return 0； }
D. private int blipvert（int x） { return 0； }
E. public int blipvert（int x） { return 0； }
F. protected long blipvert（long x） { return 0； }
G. protected long blipvert（int x， int y） { return 0； }

A. The code will deadlock.
B. The code may run with output "2 0 6 4".
C. The code may run with no output.
D. The code may run with output "0 6".
E. An exception is thrown at runtime.
F. The code may run with output "0 2 4 6".