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
A young male present with loose motions and intermittent abdominal pain over the past 1 year. Wet mount stool specimen showed the presence of multiple ova which are more than 100u in diameter. The causative organisms for the disease shall not include? 
Select and explain. 
A. Fasciola gigantica, B. Gastrodiscoides hominis, C. Echinostoma ilocanum, D. Opisthorchis viverrini
D: Opisthorchis viverrini
Answer: D: Opisthorchis viverrini 
Explanation: None