Which of the Following Is False in Regard to Precedents

Which of the following is false in regard to precedents set in District of Columbia v. Heller?

A) The Court held that Second Amendment rights apply to arms not in existence at the time of the ratification of the Second Amendment.
B) The Court limited Second Amendment protection to arms only useful in war.
C) The Second Amendment extends to all instruments that constitute bearable arms.
D) The ruling affected only the federal government and Washington, D.C., (by virtue of its federal nature) because, at that point, the Second Amendment had not yet been incorporated.