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': 'Antibody to HSV will begin to appear \nSelect and explain. \nA. in a week and reach a peak in 3 weeks, B. only after one year, C. no antibodies are present in primary HSV, D. antibodies are present in recurrent and chronic apthous stomatitis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]