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
The hookworm thrives on - 
Select and explain. 
A. Whole blood, B. Plasma, C. Serum, D. RBC
B: Plasma
Answer: B: Plasma 
Explanation: Human hookworms are distributed in all tropical and subtropical countries.Adult worms live in small intestine of man,mostly in jejunum,less often in duodenum and rarely in the ileum (refer pgno:142 baveja 3 rd edition)