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': "The number of bacteria on skin are \nSelect and explain. \nA. 10'- 102, B. 102- 105, C. 105- 010, D. >1010", 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., >1010 It has been calculated that a human adult has about 1012 bacteria on the skin.", 'role': 'assistant'}]