Why might a reader want to be cautious when reading an unauthorized biography?

• Because the author would have had a close relationship with the subject, there might be a significant amount of bias in the text.

• Because the author did not know anything about the subject, it is possible that much of the text is invented.

• Because the author did not have the cooperation of the subject, there may be missing pieces or inaccuracies in the text.

• Because the author was not directly related to the subject, it is impossible that they know about the subject's childhood.