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 slender rhabditiform larvae of which of the following helminths move about in water and are ingested by species of cyclops - 
Select and explain. 
A. D. latum, B. D. medinensis, C. W.bancrofti, D. S. mansoni
B: D. medinensis
Answer: B: D. medinensis 
Explanation: None