Alpha Corp. is considering a project that has the following cash flow and cost of capital (r) data. If the project's MIRR is 16%, and the cost of capital is 12%, what is $X is it is a cash inflow? Please explain how to calculate this via financial calculator.

r = 12% MIRR = MOD = 16%

year and cashflows

0	1	2	3	4
-1,000	$300	$400	+$X	$600

a. $256.61

b. $287.40

c. $306.51

d. $300.00

e. Cannot be determined without additional information