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: Pharmacology
Use of GnRH analogue is ? 
Select and explain. 
A. Galactogenesis, B. PCOD, C. Contraception, D. None
B: PCOD
Answer: B: PCOD 
Explanation: Ans. is 'b' i.e., PCOD GnRH agonists Long acting GnRH (LHRH) agonists causes reversible pharmacological orchiectomy (medical castration) and are used for precocious pubey, prostatic carcinoma, endometriosis, premenopausal breast cancer, uterine leiomyoma, polycystic ovarian disease and to assist induced ovulation. Superactive/Long acting GnRH are used as nasal spray or SC injection. Cetrorea, ganirelix and abarelix are GnRh antagonists. These are used subcutanously for the treatment of uterine fibroid & endometriosis and for controlled ovarian stimulation in in-vitro feilization. Preparation of superactive GnRH analogs is Buserelin, Goserelin, Leuprolide, Nafarelin, Triptorelin.