With no explanation, chose the best option from "A", "B", "C" or "D". and intentionally carried or used a firearm”; and (2) “That the defendant did so during and in relation to a drug trafficking crime.” Tr. at 342. Consistent with the then-prevailing law of the circuit, the court defined the first element of the offense as follows: In order to prove the first element of this offense, the government must prove the defendant carried or used a firearm. The government does not have to show that the defendant bore the firearm on his person, or actively employed the firearm in any manner. To satisfy this first element of the offense, it is sufficient if you find that at a given time the defendant had both the power and the intention to exercise dominion and control over the firearm. Id.; see, e.g., United States v. Harrison, 931 F.2d 65, 71 (D.C.Cir.1991) (<HOLDING>). Because Johnson was charged with using or

A: recognizing theory of constructive possession
B: holding that actual or constructive possession satisfies the uses or carries requirement of section 924c1
C: holding that constructive knowledge satisfies the reason to know standard
D: holding that the phrase possession or custody in  5225b requires actual and not merely constructive possession
B.