With no explanation, chose the best option from "A", "B", "C" or "D". appeal. We review de novo a grant of summary judgment. Rohrbaugh v. Celotex Corp., 53 F.3d 1181, 1182 (10th Cir.1995). Summary judgment is appropriate “if the pleadings, depositions, answers to interrogatories, and admissions on file, together with the affidavits, if any, show that there is no genuine issue as to any material fact and that the moving party is entitled to a judgment as a matter of law.” Fed. R.Civ.P. 56(c). These appeals require us to determine the constitutionality of certain mail regulations at the County Jail and State Prison. To determine whether the challenged regulations are valid, we apply the standard set forth in Turner v. Safley, 482 U.S. 78, 107 S.Ct. 2254, 96 L.Ed.2d 64 (1987). Thornburgh v. Abbott, 490 U.S. 401, 413, 109 S.Ct. 1874, 104 L.Ed.2d 459 (1989) (<HOLDING>). Under Turner, “when a prison regulation

A: holding that prison conditions are those aspects of prison life affecting the entire prison population
B: holding that an inmate has a first amendment right to file grievances against prison officials
C: holding turner analysis applies to prison regulations affecting the sending of a publication to an inmate ie incoming publications
D: recognizing similar analysis applies to discrimination and retaliation claims
C.