This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Congenital CNS malformations, Subject name: Pediatrics
[{'content': 'Which of the following is false about spina bifida occulta? \nSelect and explain. \nA. It is failure of bony fusion of the veebral column, B. There is skin covering overlying the veebral defect, C. Presence of a tuft of hair , lipoma or sinus on skin indicates a defect in spinal cord, D. Early surgical repair is usually indicated', 'role': 'user'}, {'content': "Answer: D \nExplanation: - 'Spina bifida occulta' is failure of bony fusion of the veebral column - It is covered by skin, with or without an overlying tuft of hair, lipoma or sinus. - It usually requires no treatment. - Sometimes, sinus carries risk of recurrent meningitis - then should be excised", 'role': 'assistant'}]