This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Embryology 2, Subject name: Anatomy
During ovulation, the secondary oocyte resides at what specific stage of meiosis? 
Select and explain. 
A. Prophase of meiosis I, B. Prophase of meiosis II, C. Metaphase of meiosis I, D. Metaphase of meiosis II
D: Metaphase of meiosis II
Answer: D: Metaphase of meiosis II 
Explanation: The secondary oocyte is arrested in metaphase of meiosis II about 3 hours before ovulation It remains in this meiotic stage until feilization occurs .