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: Anatomy
[{'content': 'Follicles are present in which pa of lymph nodes ? \nSelect and explain. \nA. Red pulp, B. White pulp, C. Coex, D. Medulla', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Coex", 'role': 'assistant'}]