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: Skin
[{'content': "Koenen's tumor associated with ? \nSelect and explain. \nA. Tuberous sclerosis, B. Neurofibromatosis, C. Psoriasis, D. Alopecia aerata", 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Tuberous sclerosis Koenen's periungual fibroma is seen in tuberous sclerosis", 'role': 'assistant'}]