This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cold Chain in India, Subject name: Social & Preventive Medicine
[{'content': 'All of the following are used for the transpoation of vaccines except : \nSelect and explain. \nA. Vaccine van, B. Cold box, C. Vaccine carriers, D. ILR', 'role': 'user'}, {'content': 'Answer: D \nExplanation: ILR is pa of electrical storage equipment Transpoation : Refrigerator vaccine van Insulated vaccine van Cold box Vaccine carrier', 'role': 'assistant'}]