This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology Pa 1 (Immune Response, Antigen-Antibody Reactions, Hypersensitivity, Structure of Immune System, Immunodeficiency Disorders), Subject name: Microbiology
[{'content': 'Heat labile immunoglobulin- \nSelect and explain. \nA. IgA, B. IgG, C. IgE, D. IgM', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Option 1, 2, 3, 4 All Abs are heat stable (Heat stability 56oC) except IgE (heat labile). IgE exhibits unique propey of heatlability (inactivated at 56degC in one hour)', 'role': 'assistant'}]