This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Robotics, Laparoscopy and Bariatric Surgery, Subject name: Surgery
What percentage of patients gets diabetes remission after 3 years of a gastric bypass surgery? 
Select and explain. 
A. 10%, B. 25%, C. 50%, D. 70%
C: 50%
Answer: C: 50% 
Explanation: Bariatric surgery: Bariatric surgery Protein/calorie malabsorption 3-year % EWL (excess weight loss) 3-year % diabetes remission Gastric band No 40-50% 20% Gastric bypass No 50-60% 50% Sleeve gastrectomy No 50-60% 50% Biliopancreatic diversion; duodenal switch Yes 70-80% 80%