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 egg which of the following parasites consist of polar filaments arising from either end of the ambrophore- 
Select and explain. 
A. Taenia saginata, B. Taenia solium, C. Echinococcus granulosus, D. Hymenolepis nana
D: Hymenolepis nana
Answer: D: Hymenolepis nana 
Explanation: None