The confession arbitrariness rule means that only true statements based on the free will of a criminal suspect, confessing guilt, have the power of evidence. According to the above definition, which of the following is practices that comply with the confession arbitrariness rule? ['Interrogation should be suspended to avoid false statements.', 'The guilty statement of the suspect must be consistent with the collected evidence.', 'The criminal suspect claims that he is not guilty and can not bear the burden of proof.', 'Condition of light punishment in exchange for a guilty plea of the criminal suspect.']