With no explanation, chose the best option from "A", "B", "C" or "D". that the 1997 conviction qualified as an adult conviction for purposes of a career-offender classification pursuant to § 4B1.1. VII. Graves argues on appeal that the district court violated his Fifth and Eighth Amendment rights by considering a juvenile conviction in determining his career-offender status. Graves contends that under the precedent of Roper v. Simmons, 548 U.S. 551, 125 S.Ct. 1188, 161 L.Ed.2d 1 (2005), which prohibited the execution of juvenile offenders, using his juvenile conviction to impose a career-offender sentence violated evolving standards of decency. Our precedent forecloses Graves’s argument that Supreme Court precedent from Roper precludes the use of juvenile convictions in imposing career offender status on a defendant. See Wilks, 464 F.3d at 1243 (<HOLDING>). Accordingly, the district court did not err

A: holding that roper did not support a similar postconviction claim and noting that roper contained obiter dictum to the effect that life imprisonment without the possibility of parole remains a permissible sentence for such offenders
B: holding that unloaded firearms qualify for this enhancement
C: holding previous convictions can only be used for sentence enhancement purposes under 18 usc  924e1 if the restoration of civil rights regarding such convictions expressly prohibited the possession of firearms
D: holding that after roper juvenile convictions can qualify as predicate offenses for sentence enhancement purposes
D.