Which of the following statements concerning accrual accounting is correct? a. Revenue is recognised in the period in which it is received in cash b. Net profit is the excess of income earned over expenses incurred during the financial period c. For most businesses the cash approach gives a better measure of economic performance than does the accrual approach d. Expenses should be recognised in the period in which they are paid e. Net profit is the excess of cash inflows from income over cash outflows for expenses