When Congress Passed a Law That Forbade Anyone from Carrying

 When Congress passed a law that forbade anyone from carrying a gun near a school,the Supreme Court declared the law invalid because such behavior 

A)  was protected by the First Amendment. 
B)  did not affect interstate commerce. 
C)  was not proven to be dangerous. 
D)  was jealously guarded by NRA lobbyists. 
E)  was protected by the Second Amendment.