With no explanation, chose the best option from "A", "B", "C" or "D". of the evidence is a legal issue we review de novo. United States v. Lewis, 240 F.3d 866, 870 (10th Cir.2001). On appeal, we “ask only whether taking the evidence ... together with the reasonable inferences to be drawn therefrom — in the light most favorable to the government, a reasonable jury could find the defendant guilty beyond a reasonable doubt.” United States v. Hanzlicek, 187 F.3d 1228, 1239 (10th Cir.1999). The jury convicted Defendant of possession of an unregistered sawed-off shotgun in violation of the National Firearms Act. 26 U.S.C. § 5861(d). Defendant alleges the Government did not prove he knew the feature of the shotgun (its length) that brought it within the scope of the Act. See Staples v. United States, 511 U.S. 600, 602, 114 S.Ct. 1793, 128 L.Ed.2d 608 (1994) (<HOLDING>). At trial, Defendant testified he had no

A: holding that the government must prove the defendant knew of the features of the firearm that brought it within the scope of the act
B: holding that the government was required to prove that the defendant lacked a license to possess a firearm but not that the defendant possessed the firearm for any duration of time
C: holding that to enhance a sentence because of the defendants use of a firearm the jury must find the defendant guilty of a crime involving a firearm or otherwise specifically find that a firearm was used
D: holding the government must demonstrate the defendant knew of the characteristics of the firearm that required it to be registered
D.