Reasons for the choice of fair value to measure assets and liabilities acquired in a business combination

Critically evaluate the Australian requirements for accounting for business combinations.The implications of the requirement to use the acquisition method of accounting for business combinations
• identification of an acquirer in a business combination
•  determination of fair values of assets in a business combination
•  reasons for the choice of fair value to measure assets and liabilities acquired in a business combination
• nature and treatment of goodwill or bargain purchase arising on a business combination.
two different ways in which a business combination can be accomplished.