This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasitology Pa 2 (Helminthology), Subject name: Microbiology
Definitive host for Guinea worm is - 
Select and explain. 
A. Man, B. Cyclops, C. Snail, D. Cyclops and man
A: Man
Answer: A: Man 
Explanation: Dracunculus medinensis (Guinea worm): organism-Guinea worm/medina worm/serpent worm habitat- subcutaneous nodules DH-humans IH- cyclops(lobsters, crabs shrimps) MOI-ingestion of drinking water from stagnant pools containing minute fresh water crustaceans (Cyclops)infested with L3 Larvae