Which of the following is not a historical factor that contributed to today's high rate of imprisonment?
A. The increased use of punishments, including mandated prison terms, for drug-related felonies
B. The two- and three-strikes legislation, mandating lengthy or life sentences for repeat offenders
C. The elimination of good-time prison credits, resulting in longer prison stays for most offenders
D. An all-out campaign for legalization of gun ownership and use of illicit drugs