Final answer:
George, while committing a robbery, accidentally discharged a firearm that resulted in the death of a clerk, resulting in charges of both robbery and manslaughter. Self-defense is not applicable as he was in the act of committing a felony.
Step-by-step explanation:
If George was robbing a store and accidentally killed the clerk by discharging a firearm, he is guilty of both robbery and manslaughter. Robbery is the act of taking property unlawfully from a person or place by force or threat of force. Manslaughter is the unlawful killing of a human being without premeditation or malice aforethought, which can occur during the commission of another crime, leading to a charge of felony manslaughter. George's actions constitute both of these crimes; self-defense does not apply as he was committing a crime at the time, and the death, while accidental, occurred in the course of a violent felony, raising the culpability to felony manslaughter.