This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Haematology, Subject name: Pathology
[{'content': 'Histological features of classical hodgkin&;s disease- \nSelect and explain. \nA. Mixed cellularity seen in the background., B. Neoplastic cells more than non-neoplastic cells, C. Both neoplastic & non-neoplastic cells are seen, D. CD15 & CD 34 seen', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Mixed cellularity of various types of apparently normal cells which include proliferating Lymphocytes ,neutrophils history plasma cells. Reference textbook of Pathology 7th edition author Harsha Mohan page number 350', 'role': 'assistant'}]