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': "Hodgkin's lymphoma can be distinguished from non Hodgkin's lymphomas by \nSelect and explain. \nA. Reed- Sternberg cells, B. Systemic manifestations, C. Occurrence in young adults, D. All of the above", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]