Fawn Purchases a Gun for Protection, Even Though a Local

Fawn purchases a gun for protection, even though a local ordinance forbids the possession of firearms within city limits. While in her home, the police arrive on an unrelated matter and notice the hand gun on Fawn's coffee table. The police subsequently arrest Fawn for violation of the city's gun control laws.

A) Fawn admits to taking the gun with her to do her shopping, in violation of the city's ban on guns. The city: ​
B) has no right to prevent Fawn from taking her gun to the stores.
C) cannot require Fawn to obtain a permit for owning a gun.
D) can require Fawn to obtain a permit to carry a concealed handgun when she shops.
E) has no ability to prevent Fawn from taking her gun to the stores.