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
Drugs that reduce the size of fibroid are:a) Danazolb) GnRH analogc) RU-486d) Estrogene) Progesterone 
Select and explain. 
A. ab, B. bc, C. acd, D. abc
D: abc
Answer: D: abc 
Explanation: None