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: Social & Preventive Medicine
[{'content': 'According to latest guidelines of vaccination, which of the following is applicable at the age of 5 years ? \nSelect and explain. \nA. DT booster + Vitamin A, B. DT, C. DPT + OPV, D. DPT +VitaminA', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]