This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Kidney & Uterus), Subject name: Surgery
[{'content': 'Renal TB mode of infection - \nSelect and explain. \nA. Direct from bowel, B. Ascending, C. Hematogenous, D. Lymphatic', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Hematogenous o Genitourinary tuberculosis is always secondary to pulmonary infection, though in many cases, the primary' focus has healed or is quiescent,o Infection occurs via the hematogenous route.o Most common genitourinary' tuberculosis site is ----- Kidney (Ref CSDT 13/e)", 'role': 'assistant'}]