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: Ophthalmology
[{'content': 'All of the following statements regarding Sturge weber syndrome are true, EXCEPT: \nSelect and explain. \nA. Characterised by nevus flammeus, B. Diffuse choroidal hemangioma may be seen in upto 40% of the cases, C. Up to 85% of individuals may suffer from seizure disorder, D. Mental retardation is seen in only less the 15% of the individuals', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Mental retardation is seen in 60% cases of Sturge weber syndrome. It is an nonfamilial disease characterised by the presence of nevus flammeus on one side of face. 40% of patients with po wine stain develop choroidal hemangioma. They also develop leptomeningeal angiodysplasia of brain and meninges resulting in seizures (85%), mental retardation and cerebral atrophy.', 'role': 'assistant'}]