Amylose is an unbranched linear polymer having 200-1000 α-d-glucose units of glucose joined by C1-C4 glycosidic linkage. So option (i) is wrong.

Cellulose is comprised of ß-D-glucose units as monomer joined through glycosidic linkage to form a straight chain. So option (iii) is wrong.

Amylopectin is a branched polymer of α-d-glucose where branched-chain is formed by C1-C6 glycosidic linkage. So (ii) is correct.

Glycogen is more highly branched polysaccharide of glucose similar to Amylopectin. Thus, option (iv) is also correct.