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
lrregular shsdding ot the endomgtrlum occura due to : 
Select and explain. 
A. Epithelium being immalure, B. lt does nol show the decidus - like oedema ot the secretory phase, C. Regression of the corpus luteum tunction, D. Over activily ot the corpus luteum function
D: Over activily ot the corpus luteum function
Answer: D: Over activily ot the corpus luteum function 
Explanation: Over activily ot the corpus luteum function