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': 'CLL is characterised by following except - \nSelect and explain. \nA. Small lymphocytes in peripheral smear, B. Hepatosplenomegaly, C. Age > 50 years and usually females, D. ZAP-70 is a marker', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Chronic Lymphocytic leukaemia occurs more commonly in middle and older age groups over 50 years of age with a male preponderance ,male - female ratio 2:1 Reference best book of Pathology 7th edition author Harsha Mohan page number 355', 'role': 'assistant'}]