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': 'Acute phase reaction in acute inflammation are - \nSelect and explain. \nA. Albumin, B. Rfibrinogen, C. Haptoglobulin, D. Gammaglobulin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Infection or injury leads to a sudden increase in the plasma concentration of ceain proteins called acute-phase proteins. Acute phase reaction of acute inflammation albumin. REF:Textbook of microbiology, Ananthanarayan a, d Paniker. Page no.: 81', 'role': 'assistant'}]