Management assertions reflect the start of the audit process and provide the basis for the auditor's examination. For each of the following situations, state the management assertion that is most likely violated. a. The purchase of an office building for corporate headquarters is placed in the land account. b. A clerk drops a box of mail full of incoming sales transactions and does not find all of them. c. Management fails to make an allowance for doubtful accounts in its period-ending adjusting entries. d. A company includes some art on loan from a museum in its furniture and fixtures account