The nurse administers narcotics to a surgical patient. Which statement represents the nurse's best understanding as it relates to the potency of different narcotics? 1) Narcotics with higher potency have a stronger effect on the patient. 2) Narcotics with lower potency have a stronger effect on the patient. 3) The potency of narcotics does not affect their effect on the patient. 4) The potency of narcotics is determined by their chemical composition.