This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'Monocytes, macrophages, and lymphocytes secrete chemicals, called as \nSelect and explain. \nA. Monokines, B. Cytokines, C. Lymphokines, D. All of the above', 'role': 'user'}, {'content': "Answer: D \nExplanation: (Refer: Robbins & Cotran's - Pathologic Basis of Disease, SAE, 1st edition, Vol I-pg no: 86& 196)", 'role': 'assistant'}]