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: Dental
[{'content': 'True about incontinenta pigmenti include the following except – \nSelect and explain. \nA. X-linked dominant, B. Primary skin abnormality, C. Avascularity of peripheral retina, D. Ocular involvement is seen in almost 100% cases and is typically unilateral', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ocular involvement occurs in 20-35% of cases. Involvement is assynzetrical. The two pathognomic changes are -\n\n\nRetinal pigmentary changes with mottled diffuse hypopigmentation.\nAbnormal peripheral retinal vessels with areas of non perfusion (a vascularity).', 'role': 'assistant'}]