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
Highest pickup for gastro juejunocolic fistula is by ? 
Select and explain. 
A. Ba swallow, B. Ba meal, C. Ba enema, D. Ba follow through
C: Ba enema
Answer: C: Ba enema 
Explanation: Ans. is 'c' i.e., Ba enema