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: Gynaecology & Obstetrics
Irregular shedding of the endometrium occurs due to : 
Select and explain. 
A. Epithelium being immature, B. It does not show the deciduas-like oedema of the secretory phase, C. Regression of the corpus luteum function, D. Over activity of the corpus luteum function
D: Over activity of the corpus luteum function
Answer: D: Over activity of the corpus luteum function 
Explanation: Over activity of the corpus luteum function