This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S., Subject name: Medicine
[{'content': 'Shagreen patch is a cha racteristic feature of - \nSelect and explain. \nA. Tuberous sclerosis, B. Neurofibromatosis, C. Sturge weber syndrome, D. Von Hippei-Lindau syndrome', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Tuberous Sclerosiso Shagreen Patch (connective tissue naevi) are roughened raised leathery lesions with an orange peel consistency that are typically seen in patients with Tuberous Sclerosis.", 'role': 'assistant'}]