This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Steven-Johnson syndrome involves \nSelect and explain. \nA. Type I hypersensitivity reaction, B. Type II hypersensitivity reaction, C. Type III hypersensitivity reaction, D. Type IV hypersensitivity reaction', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Both erythema multiformae and steven Johnson syndrome are due to deposition of immune complexes in the superficial microvasculature of skin and mucosa. These immune complex diseases are mediated through type III hypersensitivity reaction.', 'role': 'assistant'}]