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
Truo aboul proliteratlon phase ol the endometrium is : 
Select and explain. 
A. lt stas and proceeds rapidly tor 3 - 5 days, B. The glands ot th'6 functional layer are simple lubules with regular spithslium, C. Intense hyperemia, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: All of the above