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: Microbiology
[{'content': 'A person has received complete immunization against tetanus 10 years ago. Now he presents with a clean wound without any lacerations from an injury sustained 2.5 hours ago. He should now be given: \nSelect and explain. \nA. Full course of tetanus toxoid, B. Single dose of tetanus toxoid, C. Human tetanus immunoglobulin, D. Human tetanus immunoglobulin and single dose of toxoid', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Management of wound depend on nature of wound and immune status of person.\nAll wounds should receive surgical toilet.', 'role': 'assistant'}]