What's a good rule of thumb in preventing medication mistakes? A. Check that the severity of the illness aligns with the strength of the dosage prescribed for the medication. B. Read the label on the medication at least three times to ensure it's the correct dosage requested on the prescription. C. If the exact dosage of a medication prescribed isn't in stock, dispense the lower strength one to the patient and advise them to return when the stock levels are replenished. D. Make sure that the prescription matches the nature of the ailment described by the patient.