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
Ova that floats in saturated saline are of: 
Select and explain. 
A. Unfeilized eggs of Ascaris lumbricoides, B. T. saginata, C. H. Nana, D. N one of the above
C: H. Nana
Answer: C: H. Nana 
Explanation: H. Nana