This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
[{'content': 'Maximum half life - \nSelect and explain. \nA. Ig G, B. Ig A, C. Ig M, D. Ig E', 'role': 'user'}, {'content': "Answer: A \nExplanation: The half-life of IgG is approximately 23 days. - the half-life of IgA 6-8 days. - the half-life of IgM is 5 days. - the half-life of IgD is 3 days. - the half-life of IgE is 2 days. RReference:Anathanarayan & paniker's 9th edition, pg no:96,98. <\\p>", 'role': 'assistant'}]