This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthetic equipments, Subject name: Anaesthesia
[{'content': 'What is the volume of reservoir bag used in neonatal resuscitation \nSelect and explain. \nA. 240 ml, B. 500 ml, C. 750 ml, D. 1000 ml', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The volume of reservoir bag used in neonatal resuscitation is 250 mlThe volume of reservoir bag used in resuscitation of infants is 500 ml** almost all of the manufacturers are using bag sizes between 240 mL and 320 mL for infants and 500 mL for children', 'role': 'assistant'}]