Which of the following has not generally been found in research on parole release? a. no more than about half of the inmates released on parole successfully complete their term of supervision. b. state inmates released through mandatory parole almost always have a higher success rate than inmates released by a parole board. c. the chances of failure are generally highest during the early stages of parole. d. inmates released from prison on parole for the first time are more likely to succeed than rereleases.