Which of the Following Is Not an Example of Regulatory

Which of the following is not an example of regulatory controls as a form of nontariff barrier?

A) Country A conducts safety inspections of all imported exercise equipment.
B) Country B requires foreign firms to obtain licenses before constructing plants.
C) Country C requires producers of cosmetics to obtain government product registration.
D) Country D offers tourists a separate exchange rate than what is offered to importers.