Aubey Aircraft recently announced that its net income increased sharply from the previous year, yet its net cash flow from operations declined. Which of the following could explain this performance?

	1.	The company's operating income declined.
	2.	The company's expenditures on fixed assets declined.
	3.	The company's cost of goods sold increased.
	4.	The company's depreciation and amortization expenses declined.
	5.	The company's interest expense increased.