This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Physiology
[{'content': 'Number of ovum at bih is \nSelect and explain. \nA. 2-3 million, B. 2-5 million, C. 7-10 million, D. 10-15 million', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In humans no ova formed after bih. at time of bih there are 2 million ova.Ref: Ganong&;s review of medical physiology; 24th edition; page no: 401', 'role': 'assistant'}]