Redneck Nation: How the South Really Won the War (ISBN  ) is a book by conservative personality Michael Graham. Released in 2002 by Warner Books, the book covers a wide variety of Graham's personal opinions on current and historical events in the context of southern ideas and a "redneck" political point of view.
Can we infer the following?
Michael Graham interviewed his friends for their personal opinions for the book as well.

Select from the following. -- Yes; -- It's impossible to say; -- No;
The answer is:
It's impossible to say