Which of the following is recognised as a change in accounting estimate according to IAS 8 Accounting Policies, Changes in Accounting Estimates and Errors? 1. Adjustment to the provision for inventory obsolescence. 2. Correction of a material prior-period error. 3. A change in the useful life of a non-current asset. 4. A change in the basis of valuing inventory. Select one 0 0 0 O a. 3 only b. 1, 2, 3, and 4 c. 2 and 3 only d. 1 and 3 only e. 2 and 4 only