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.

[Q]: The death penalty is much more expensive than life without parole because...blah.blah.blah...*
[A]: Valid


[Q]: There would be no mistake as to who took out the person responsible for messing with my family.
[A]: Valid


[Q]: Rather their execution is enforced as a safeguard against society and even other inmates.
[A]:
Valid