A nurse is caring for a patient that is prescribed with a controlled substance. Which of the following statements accurately describes controlled substances?

A. Controlled substances do not have the potential for abuse: This is incorrect, as controlled substances have varying degrees of abuse potential. B. Controlled substances do not have the potential for dependence: This is incorrect, as many controlled substances have the potential for dependence. C. Controlled substances do not have the potential for misuse: Controlled substances often have misuse potential, which is why they are regulated. D. Controlled substances have a Schedule classification: This is correct. Controlled substances are classified into schedules based on their potential for abuse and dependence.