please answer both question would rate thank you

Which of the following statements is incorrect? Observable inputs in fair value hierarchy are more desirable than unobservable inputs Accounting information based on fair value could be more relevant than that based on historical cost Fair value bases measurements on the cash that would be received to sell assets or paid to transfer liabilities in an orderly market transaction Net realizable value of an asset is the estimated selling price of the asset in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation Which of the following expense recognition approaches is used to recognize depreciation expense? By associating an expense with the revenues recognized in a specific time period By a systematic and rational allocation to specific time periods In the period incurred, without regard to related revenue Based on an exact cause-and-effect relationship