Which of the following statements are true?
i) Starch, cellulose, resins etc are natural polymers
ii) Vulcanised rubber is a semi-synthetic polymer
iii) HDPE, PVC, Nylons, Polyesters etc are linear polymers
iv) Linear polymérs possess relatively low density, low melting point and low tensile strength
v) Amyłopectin and glycogen are naturally occuring and branched chain polymers
vi) In cross linked polymers, strong covalent bonds exist between linear polymer chains . (1) Only i, ii and iii are true (2) All except iv are true (3) Only vand vi are true (4) Only i, ii, v and vi are true

Options

A. Only i, ii and iii are true
B. All except iv are true
C. Only vand vi are true
D. Only i, ii, v and vi are true