Which One of the Following Is NOT a Reason Why

Which one of the following is NOT a reason why some states abolished discretionary parole release?

A) opponents of discretionary parole argued that indeterminate sentencing and discretionary parole failed to achieve offender rehabilitation
B) opponents of discretionary parole argued that it cost too much
C) opponents of discretionary parole argued that parole board decision-making lacked accountability
D) opponents of discretionary parole argued that parole decisions were made without the benefit of a written set of policies and procedures