Which of the following statements concerning net income versus cash flow is most correct?

Net income is a rough measure of a businesss cash flow.

Net income can be converted into a rough measure of cash flow by adding noncash expenses, typically depreciation.

Net income can be converted into a rough measure of cash flow by adding nonoperating income.

Net income can be converted into a rough measure of cash flow by adding the provision for bad debts.

None of the above statements are correct.