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: Pediatrics
[{'content': 'A 2 year old child without fever develops bone pain, vomiting and features of increased intracranial pressure following excessive medication. The drug most likely to be responsible for this is – \nSelect and explain. \nA. Vitamin A, B. Phenothiazine, C. Phenytoin, D. Vitamin D', 'role': 'user'}, {'content': 'Answer: A \nExplanation: It is a case of pseudotumor cerebri.', 'role': 'assistant'}]