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
Decidualization of endometrium is due to 
Select and explain. 
A. Estrogen, B. Progesterone, C. Inhibin, D. FSH
B: Progesterone
Answer: B: Progesterone 
Explanation: Progesterone is responsible for decidualization of endometrium.