According to IAS 38 Intangible assets, which of the following statements is/are correct? 1 Capitalised development expenditure must be amortised over a period not exceeding five years. 2 If all the conditions specified in IAS 38 are met, development expenditure may be capitalised if the directors decide to do so. 3 Capitalised development costs are shown in the statement of financial position under the heading of non-current assets. 4 Amortisation of capitalised development expenditure will appear as an item in a company's statement of changes in equity.