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
[{'content': 'All are indications of intra uterine insemination EXCEPT: \nSelect and explain. \nA. Vicid cervical mucus, B. Oligozoospermia, C. Tubal blockade, D. Immune factor of sperms', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Tubal blockade REF: A handbook of intrauterine insemination by Godwin Ikechukwu Meniru, Peter R. Brinsden, Ian Logan Craft Page 4 Indications of intrauterine insemination: Ejaculatory failure (neurogenic, psychogenic, hypospadias, retrograde ejaculation) Cervical factor (poor cervical mucus, cervical mucus hostility) Male subfeility (oligozoospermia, asthenozoospermia, teratozoospermia) Immunological (male/female antisperm antibodies) Endometriosis Idiopathic Combined factors', 'role': 'assistant'}]