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: Social & Preventive Medicine
Which of the following is a zoonotic disease? 
Select and explain. 
A. Filariasis, B. Malaria, C. Hydatid cyst, D. Dengue fever
C: Hydatid cyst
Answer: C: Hydatid cyst 
Explanation: None