The Likelihood of "Continuous Threat to Society" That Expert Predictions

The likelihood of "continuous threat to society" that expert predictions of risk are supposed to address in capital penalty cases is problematic. All of the following are valid reasons for this, EXCEPT:

A) This standard should refer to "prison society" since the alternative to the death penalty is life in prison.
B) The factors contributing to prison violence are different from those contributing to violence in general society.
C) Very few court cases have addressed this issue so it is unclear which "society" the standard refers to.
D) Psychological tests measuring future dangerousness are much less accurate when applied to "prison society."