Which of the Following Is Not a Procedural Due Process

Which of the following is not a procedural due process issue?

A) Police must obtain a search warrant to enter and search a citizen's home for drugs.
B) The state of Massachusetts raised the drinking age to 25 years old.
C) The state of Oklahoma passes a statute prohibiting citizens from presenting evidence in drunk-driving trials.
D) The state of California passes a statute allowing relatives of victims of violent crimes to sit on the jury in the general trial court.