This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genital Tract Infections (Too hot to handle!), Subject name: Gynaecology & Obstetrics
[{'content': "Kamla, a 30 yrs old lady examined for infeility by hysterosalpingography, reveals 'Bead-like' fallopian tube & 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: Tuberculosis -Changes in the fallopian tube are : Beaded tubes Lead pipe Rigid tubes Calcific changes Hydrosalpinx Tubal obstruction and adhesions', 'role': 'assistant'}]