Which of the Following Is Not a Regulation or Law

Which of the following is not a regulation or law that states have passed to prevent large price increases for pharmaceuticals?

A) Jail terms for CEOs or owners of drug companies for exorbitant price increases for critical drugs.
B) Capping co-payments at a defined amount for a particular drug such as insulin.
C) Establishment of a drug affordability board.
D) Requirement to provide a price justification for any price rise over a set amount, such as 20%.