This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Photosensitive Disorders, Subject name: Skin
[{'content': 'Which of the following drug is preferred for skin rash in LE? \nSelect and explain. \nA. Steroids, B. Aspirin, C. Chloroquine, D. Azathioprine', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. c. ChloroquineChloroquine (Antimalarial drug) act as a systemic sunscreen by providing photoprotection. So used as prophylactic agent in LE.', 'role': 'assistant'}]