This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous System, Subject name: Pediatrics
[{'content': 'Tuft of hair over the lumbosacral region in a newborn is suggestive of: \nSelect and explain. \nA. Spina bifida occulta, B. Sinus tract, C. Tumor, D. Any of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: d. Any of the above(Ref: Nelson's 20/e p 2580, 2816)90% of patients with occult spinal dysraphism, have a cutaneous abnormality overlying the lower spine, including a small dimple, tuft of hair, dermal vascular malformation, or subcutaneous lipomaOccult spinal dysraphism includes spina bifida occulta, lipomeningocele, intradural lipoma, diastematomyelia, tight filum terminale, dermoid cyst-sinus, aberrant nerve roots, anterior sacral meningocele, and cauda equina tumor.", 'role': 'assistant'}]