For an investment with following cash flow, calculate the NPV, Benefit Cost Ratio, and Present Value Ratio at minimum discount rate of 12%. And conclude if this is a an economically satisfactory investment. Please show your work.

C=4,000	C=3,000	C=2,000	I=2,800	I=3,200	I=3,600	I=3,800	L=$4,000
0	1	2	3	4	5	6

C: Cost, I:Income, L: Salvage value