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
The nematode which resides in the caecum and appendix is: 
Select and explain. 
A. Ascaris lumbricoides, B. Mansonella ozzardi, C. Enterobius vermicularis, D. All of these
B: Mansonella ozzardi
Answer: B: Mansonella ozzardi 
Explanation: Enterobius vermicularis