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
All cause malabsorption except - 
Select and explain. 
A. Giardiasis, B. Ascaris lumbricoides, C. Strongyloides, D. Capillaria phillipinesis
B: Ascaris lumbricoides
Answer: B: Ascaris lumbricoides 
Explanation: largest intestinal nematode Heavy infection-intestinal obstruction Colicky cramps and loss of appetite (refer pgno:139 baveja 3 rd edition)