This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Parasitic Drugs, Subject name: Pharmacology
A patient presented with diarrhea and his stool examination showed the egg for H. Nana. What is drug of choice? 
Select and explain. 
A. Praziquantal, B. Mebendazole, C. Albendazole, D. Pyrantelpamoate
A: Praziquantal
Answer: A: Praziquantal 
Explanation: DOC for platyhelminths ( flukes and tapeworms )- Praziquantal Except liver fluke- triclabendazole Except dog tapeworm - albendazole Drug of choice for nematodes is ALBENDAZOLE Except: Filarial worm - Diethylcarbamazine Except Strongyloides: Ivermectin Except Onchocerca: Ivermectin