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: Medicine
[{'content': 'What is the total dose of Vitamin - A given under national immunisation schedule \nSelect and explain. \nA. 16 Lac IV, B. 17  Lac IV, C. 18  Lac IV, D. 20  Lac IV', 'role': 'user'}, {'content': 'Answer: B \nExplanation: 1 lac IU\xa0@ 9 months age.\n2\xa0lac IU\xa0every 6 months therefter, till the age of 5 years.', 'role': 'assistant'}]