You are making a $50,000 investment and feel that a 15 percent rate of return is reasonable given the nature of the risks involved. You feel you will receive at least $8,000 in the first year, $21,000 in the second year, $43,000 in the third year, and potentially could see a cash inflow of $7,000 in the fourth year. What is the net present value of this investment given your expectations?

a)$6,140.04
b)		$5,111.01
c)		$7,529.10
d)		$8,218.40