Choose the correct Statements. 

i.	Starch in plants and glycogen in animals are storage molecules
ii.	Starch can hold iodine, molecules in its helical loops but cellulose being non-helical cannot hold iodine.
iii.	Chitin, a heteropolysaccharide occurring in the exoskeleton of arthropods, consists of N-acetyl glucosamine.
iv.	Right end of polysaccharide is called reducing end while left end is called non-acetyl glucosamine.

1. i and ii only 
2. ii and iii
3. i, ii and iv 
4. iii only