Identify the accounting assumption, criteria, or objective that gives the most direction on how to account for each of the following situations:
a. The owner of a business desires monthly financial statements to measure the financial progress of the business on an ongoing basis.
b. Expenses of $3,000 must be accrued at the end of the period to measure income properly.
c. A customer states her intention to switch travel agencies. Should the new travel agency record revenue based on this intention? Give the reason for your answer.
d. Expenses of the period total $6,000. This amount should be subtracted from revenue to compute the period's net income.