Ans.B.Male infeilityGnRH is used in all those conditions where there is increased estrogen as GnRH decrease estrogen secretion.Mnemonic :* A - F and HIP* A = Adenomyosis* B = Irritable Bowel Syndrome (under Trial)* C = Ca Breast (Tamoxifen + GnRH agonist give good result)* D = DUB* E = Endometriosis* F = Fibromyoma uterus.* H = Hirsutism* I = Infeility* P = Precocious Pubey.