Ben Is an Identity Thief

Ben is an identity thief. His scam is really easy: he has a skimmer that he puts on the credit card reader at the gas station. When unsuspecting patrons pay for their gasoline, Ben gets a copy of their credit card number. Ben has just bought a Mercedes Benz under one of his unsuspecting victim's names. When the dealer does the credit check, they find that there is an alert for potential stolen identity. Ben is arrested, charged, convicted, and sentenced to 10 years in prison.
-In addition to Ben's sports betting practice, he has a job in the captain's office helping crunch numbers and budgets. What does Ben accomplish by working in the captain's office

A) Vocational training will help Ben at his parole hearing.
B) This is the concept of a furlough.
C) He is working toward his degree in accounting.
D) Correctional administration needs to keep inmates busy.