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': 'Chromosomal no. of primary spermatocyte is : \nSelect and explain. \nA. 46 XY, B. 22XN, C. 22XX, D. 46 XX', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 46 XY', 'role': 'assistant'}]