This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and Reproduction, Subject name: Physiology
Ovulation in a women with 28 days cycle occurs at- 
Select and explain. 
A. 14 days prior to menstruation, B. Just before LH surge, C. Just after corpus luteal maturation, D. Due to Progesterone rise
A: 14 days prior to menstruation
Answer: A: 14 days prior to menstruation 
Explanation: Ans (a) 14 days prior to menstruation(Ref: Ganong, 25th ed/p.401)Ovulation is the process of release of ovum that happens around 14th day of the cycle