Arrange the steps of plant micropropagation in proper order.
(i) Surface sterilization of explant
(ii) Callus initiation on auxin-rich medium
(iii) Shoot differentiation from callus on cytokinin-rich medium
(iv) Root induction on shoot using auxin
(v) Hardening and acclimatization in greenhouse
(vi) Selection of high-yielding or disease- disea resistant explants\