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
Megaloblastic anaemia is caused by 
Select and explain. 
A. Diphyllobothrium Latum, B. H. Nana, C. Echinococcus Granulosus, D. T. Solium
A: Diphyllobothrium Latum
Answer: A: Diphyllobothrium Latum 
Explanation: Adult worm absorbs Vit B12.