Which of the following correctly describes hypothesis testing? A. It is a systematic approach to assessing tentative beliefs about reality. B. It involves confronting beliefs with evidence and deciding, in light of this evidence, whether the beliefs can be maintained as reasonable or must be discarded as untenable. C. It only involves statements about population parameters. D. It is a systematic approach to assessing tentative beliefs about reality and it involves confronting beliefs with evidence and deciding, in light of this evidence, whether the beliefs can be maintained as reasonable or must be discarded as untenable. E. None of these.