Hello can someone help me in this mcq question

You calculate the following estimates of project cash flows (there are no taxes):

	Pessimistic	Most Likely	Optimistic
Investment	100	80	60
Revenues	30	40	50
Costs	20	15	10

The revenues and costs occur in perpetuity. The cost of capital is 8 percent. Conduct a sensitivity analysis of the projects NPV to variations in costs. (Answers appear in order: [Pessimistic, Most Likely, Optimistic].)

+170.00, +232.50, +295.00

-100.00, +500.00, +800.00

-90.00, -55.00, -20.00

-88.33, -50.00, -18.50