(10pts) The incremental cash flow between two alternative is shown below. The equation(s) that can be used to correctly solve for the incremental rate of return is (are):

Year	Incremental Cash Flow
0	-$20,000
1 through 10	+$3,000
10	+$400

		0 = -20,000 (F/P, i, 10) + 3000 (F/A, i, 10) + 400
		0 = -20,000 (A/P, i, 10) + 3000 + 400 (A/F, i, 10)
		All of the above
		0 = -20,000 + 3000 (P/A, i, 10) + 400 (P/F, i, 10)