This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Rapidly progressive glomerulonephritis is characterised by - \nSelect and explain. \nA. Cresents, B. Splitting of basement membrane, C. Neutrophil infilteration of the mesangium, D. Glomerulosclerosis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Cresents", 'role': 'assistant'}]