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
"Autoinfection" is seen with: 
Select and explain. 
A. Ascaris, B. Strongyloides, C. Giardia, D. Gnasthostoma
B: Strongyloides
Answer: B: Strongyloides 
Explanation: Strongyloides