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: Pathology
Anaemia in human is caused by which worm: 
Select and explain. 
A. Round worm, B. Hook worm, C. Strongyloides, D. Tape worm
B: Hook worm
Answer: B: Hook worm 
Explanation: Hook worm