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
Ascaris lumbricoides is: 
Select and explain. 
A. Ascaris lumbricoides is:, B. Cestode, C. Protozoa, D. Trematode
A: Ascaris lumbricoides is:
Answer: A: Ascaris lumbricoides is: 
Explanation: Nematode