What is the penalty for assaulting an officer under 18 USC § 111?

Under 18 USC § 111, the penalties for assaulting a federal officer depend on the nature of the assault. The law outlines that if the assault involves the use of a deadly weapon or results in serious bodily injury, it is considered a felony. Specifically, such acts can lead to a penalty of up to 8 years' imprisonment and/or a fine. Therefore, the correct answer reflects the severity of this crime, emphasizing the seriousness of assaulting an officer, which warrants the higher penalty associated with such felonious behavior.

The context of this statute indicates that federal authorities take assaults on their officers very seriously to ensure their protection and the enforcement of law. Such penalties are higher in cases where the assault could have led to more severe consequences, justifying a stricter punishment to serve as a deterrent.