This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: parasitology, Subject name: Microbiology
Natural habitat of Schistosoma (blood flukes) - 
Select and explain. 
A. Veins of the urinary bladder, B. Poal & pelvic veins, C. Vesical plexuses, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: The adult worm of S.haematobium live primarily in the vesical and pelvic venous plexuses where as S.japonicum and S.mansoni inhabit superior mesentric vein and inferior mesentric vein respectively (refer pgno:119 baveja 3 rd edition)