Which of the following statements are correct?

I.	Control is the criterion for determining whether a parent-subsidiary relationship exists.
II.	If the fair value of a depreciable asset is greater than the carrying amount, in the years subsequent to the acquisition date the depreciation expense recorded in the books of the subsidiary will be less than that for the group.
III.	The main purpose of the substitution elimination entry is to ensure no double counting of group net assets and equity.
IV.	In a business combination, equity instruments issued as part of the purchase consideration should be measured at their original issue price.