The greatest concerns that have arisen in recent years regarding the death penalty are related to

a. the lethal injection method used to cause the convicted person's death.

b. the execution of individuals that happened to be juveniles when the crime was committed.

c. the need to create a more precise judicial process to decide death penalty cases.

d. a desire to convert cases related to the death penalty from the state courts to the federal courts.

e. the fact that a larger number of minorities are executed when compared to white convicts.