This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pathology
[{'content': 'Fibrinoid necrosis is seen in following except \nSelect and explain. \nA. Serum sickness, B. Diabetes mellitus, C. Ahus reaction, D. SLE', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Fibrinoid necrosis is a special<img src=" /> form of necrosis, visible by light microscopy, usually in immune reactions in which complexes of antigens and antibodies are deposited in the walls of aeries. The deposited immune complexes, together with fibrin that has leaked out of vessels, produce a bright pink and amorphous appearance on H&E preparations called fibrinoid (fibrin-like) by pathologists. it is found in Systemic lupus erythematosus; some forms of glomerulonephritis; serum sickness; Ahus reaction. (Robbins Basic pathology,9th edition.pg no.11)', 'role': 'assistant'}]