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: Microbiology
Ankylostoma duodenale commanly lives in: 
Select and explain. 
A. Upper 1/3rd of duodenum, B. Lower 1/3rd of duodenum, C. Jejunum, D. Ileum
C: Jejunum
Answer: C: Jejunum 
Explanation: Ans. c. Jejunum