We would like you to assess the QUALITY of each of the following argument (discussing Gun Control) and determine if the argument is Valid or Invalid. A valid argument is clearly interpretable and either expresses an argument, or a premise or a conclusion that can be used in an argument for the topic of gun control. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of gun control.

[Q]: If a gun owner knowingly sells to a prohibited felon who commits a murder with the gun, then the felon alone is responsible for the murder.
[A]: Valid


[Q]: This is just further proof that gun control does not equal crime control and there are no "reasonable" nor "responsible" gun control laws.
[A]: Valid


[Q]: If we look at D.C. we can see that people who had registered their guns before the gun ban were allowed to keep their guns after the ban took effect.
[A]:
Valid