This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urology, Subject name: Surgery
An absent kidney is found in 
Select and explain. 
A. 1:200 individuals, B. 1:700 individuals, C. 1:1400 individuals, D. 1:5000 individuals
C: 1:1400 individuals
Answer: C: 1:1400 individuals 
Explanation: About 1 in 1400 people have a single kidney. Sometimes a ureter and renal pelvis are present with no kidney. The contralateral kidney is typically hyperophied. Reference: page 1282 Bailey and Love's sho practice of surgery 26th edition ( note : according to 27th edition Complete absence of one kidney occurs in 1 in 500-1000 bihs )