This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Biochemistry
which absorbs least water 
Select and explain. 
A. Mucilage, B. Hemi cellulose, C. lignin, D. Pectin
B: Hemi cellulose
Answer: B: Hemi cellulose 
Explanation: ref : lipincott