This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
[{'content': 'True statement about influenza A is - \nSelect and explain. \nA. It has a double stranded segmented RNA, B. Pandemic are caused by antigenic drift, C. Nucelocapsid antibody is not specific, D. Hemagglutinin and Neuraminidase is strain specific', 'role': 'user'}, {'content': "Answer: D \nExplanation: The viral or antigen is composed of at least two coded proteins hemagglutinins and neuraminidase. Both are strain-specific and is capable of great variation. REF:ANANTHANARAYAN AND PANIKER'S TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO-498", 'role': 'assistant'}]