We would like you to assess the QUALITY of each of the following argument (discussing Death Penalty) 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 death penalty. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of death penalty.

[EX Q]: Execution is quick, relatively simple, and very inexpensive regardless of the method used.
[EX A]: Valid

[EX Q]: The crime rate was higher after the death penalty than before it.
[EX A]: Valid

[EX Q]: If there was a justice system that was equally fair to all accused, made no mistakes and only executed the guilty, proponents of the death penalty could rightly cry, "Fry 'um up".
[EX A]:
Valid