This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and health, Subject name: Social & Preventive Medicine
Man is intermediate host of - 
Select and explain. 
A. Kala azar, B. Filariasis, C. Hydatid cyst, D. All of the above
C: Hydatid cyst
Answer: C: Hydatid cyst 
Explanation: Man as INTERMEDIATE HOST: (mnemonic: PET) Plasmodium Echinococcus granulosus (Hydatid cyst) Toxoplasma gondii In Tinea solium man may be intermediate or definitive Host.