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. Dog tapeworm, B. Hookworm, C. Fish tapeworm, D. Threadworm
C: Fish tapeworm
Answer: C: Fish tapeworm 
Explanation: None