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': 'Among the following options which is not characteristic feature of non - hodgkins lymphoma \nSelect and explain. \nA. Ariser in a single node or Chain of nodes, B. Non contiguous spread in an unpredictable fastion, C. Merentric nodes and waleya ring are involved, D. Extranodal involvement', 'role': 'user'}, {'content': "Answer: A \nExplanation: Solution\nNon - Hodgkin's lymphoma mainly involves multiple peripheral nodes.\nThey do not arise in Sequential manner.", 'role': 'assistant'}]