Julie Owns a Gun and Has for Several Years

Julie owns a gun and has for several years. She is arrested for possession of a firearm within the city where she lives. The day following her arrest, the city passes a law making gun ownership of any kind illegal and punishable by a year in jail for the first offense. Julie is sentenced to one year and a day in prison. ​

A) The constitutional guarantee that criminal arrests and trials must meet certain minimum standards of fairness is the definition of: ​
B) due process.
C) bill of attainder.
D) void of vagueness doctrine.
E) overbreadth doctrine.