This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
Bariatric surgery includes all except: 
Select and explain. 
A. Gastric banding, B. Gastric bypass, C. Biliopancreatic diversion, D. Ileal transposition
D: Ileal transposition
Answer: D: Ileal transposition 
Explanation: Bariatric Surgery: Indication for Bariatric Surgery Patients that have a BMI of 35 Kg/m3 or more with comorbidity. Those with a BMI of 40 Kg/m2 or greater regardless of comorbidity Bariatric Operation Mechanism of action Veical banded gastroplasty Laparoscopic adjustable gastric banding (Safest & reversible) Restrictive Roux-en-Y gastric bypass (RYGB): MC performed procedure now-a-days Largely Restrictive/Mildly Malabsorptive Bilopancreatic diversion Duodenal switch Largely Malabsorptive/Mildly Restrictive Ref: Sabiston 20th edition Pgno: 1168