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': 'The difference between contamination and infection is that in infection- \nSelect and explain. \nA. Infectious agent is on body surface or on nonhuman objects, B. Infectious agent is in the body of human, C. Ahropods on the body surface, D. None', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Infectious agent is in the body of human o Infection --> Infectious agent in the body. o Contamination ---> Infectious agent on body surface or on objects. o Infestation --> Ahropods on body surface.", 'role': 'assistant'}]