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
The first gastrectomy was performed in 1881 by ? 
Select and explain. 
A. Mickuliz, B. Wolfer, C. Billroth, D. Moynihan
C: Billroth
Answer: C: Billroth 
Explanation: Ans. is 'c' i.e., Billroth