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: ENT
[{'content': "Prussak's space is situated in - \nSelect and explain. \nA. Epitympanum, B. Mesotympanum, C. Hypotympanum, D. Ear canal", 'role': 'user'}, {'content': "Answer: A \nExplanation: Prussak's space is the space between pars flaccida, and the neck of malleus in the Epitympanum (see fig. 1.4)\n\nIt is the M/C site for primary cholesteatoma.", 'role': 'assistant'}]