Which of the Following Restrictions on the Use of the Mail

Which of the following restrictions on the use of the mail system would not be an appropriate restriction for a correctional administrator to place on prisoners?

A) Requiring death row inmates to receive only photocopies of any mail they receive, other than mail from attorneys
B) Examining all incoming and outgoing mail for contraband
C) Prohibiting inmates from using direct email for correspondence
D) Censoring mail sent from an inmate to an attorney