This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary Fistulas, Subject name: Gynaecology & Obstetrics
[{'content': 'All of the following surgeries are done in SUI except \nSelect and explain. \nA. Shirodkar sling, B. Aldridge sling, C. Kellys stitch, D. Marshall Marchetti Krantz', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is a, i.e. Shirodkar slingSurgeries done for SUI--Earlier* Aldridge sling* McGuire sling* Kelly's stitch* Marshall Marchetti Krantz surgerySurgeries done for SUI--Now-a-daysBest - TOT2nd Best - TVT3rd Best - Burch colposuspension", 'role': 'assistant'}]