A teenage patient is taking a tetracycline drug as part of treatment for severe acne. When the nurse teaches this patient about drug-related precautions, which is the most important information to...

A teenage patient is taking a tetracycline drug as part of treatment for severe acne. When the nurse teaches this patient about drug-related precautions, which is the most important information to convey? a When the acne clears up, the medication may be discontinued. b This medication needs to be taken with antacids to reduce GI upset. c The patient needs to use sunscreen or avoid exposure to sunlight, because this drug may cause photosensitivity. d The teeth should be observed closely for signs of mottling or other color changes.