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: Surgery
[{'content': 'An absent kidney is found in - \nSelect and explain. \nA. 1:200 individuals, B. 1:700 individuals, C. 1:1400 individuals, D. 1:5000 individuals', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., 1:1400 individuals Smith's Urology, 17/e, p 510 writes that the incidence of agenesis of one kidney is 1 in 450-1000 bihs.", 'role': 'assistant'}]