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.

Life incarceration will never let him kill again, and its cheaper.
Valid

Could it be that people are going to commit the crimes anyway no matter what the punishment is, so the sentence we pass should be sufficient to prevent reoffending only.
Valid

Whatever the offender did should have the same done to him/her.

Valid