Why, According to Metz, Is the Potential for Executing the Innocent

Multiple Choice

Why, according to Metz, is the potential for executing the innocent not a decisive objection to the death penalty?

A) This would wrongly imply that a human being's inherent dignity is conditional on his or her being innocent of wrongdoing
B) The execution of the innocent happens sufficiently rarely that it could be considered a necessary cost of an effective system of justice.
C) This would wrongly entail that absolute certainty of danger would be a necessary condition for the just use of deadly force.
D) The wrongfulness of executing the innocent is outweighed by the protection to the community accomplished through deterrence.