Which of the following statement correct for auxin?

(i) Spraying juvenile conifers with auxin hastens the maturity period, thus leading to early seed production.

(ii) Promotes bolting in beet, cabbages and many plants with rosette habit.

(iii) It helps to produce new leaves, chloroplasts in leaves, lateral shoot growth and adventitious shoot formation.

(iv) Their ability to cause an increase in length of axis is used to increase the length of grapes stalks.

(v) It helps to initiate rooting is stem cuttings.

(vi) It promotes flowering e.g., in pineapples.