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': "Kamla, a 30 yrs old lady examined for infeility by hysterosalpingography, reveals 'Bead-like' fallopian tube and clubbing of ampulla. Most likely cause is: \nSelect and explain. \nA. Gonococcus, B. Mycoplasma, C. Chlamydia, D. Mycobacterium tuberculosis", 'role': 'user'}, {'content': "Answer: D \nExplanation: Bead-like' fallopian tube and clubbing of ampulla in a case of infeility indicates previous infection with Mycobaterium tuberculosis. Ref: Shaw's Textbook of Gynaecology, 12th Edition, Page 119 ; Textbook of Gynecology By D C Dutta, 4th Edition, Page 132", 'role': 'assistant'}]