Please answer question (1),(2),(3). Much appreciated. Thank you for your help.

Epiphany Industries is considering a new capital budgeting project that will last for three years. Epiphany plans on using a cost of capital of 12% to evaluate this project. Based on extensive research, it has prepared the following incremental cash flow projections: (1) What is the NPV of this project? (2) Epiphany is worried about the reliability of the sales forecast. How sensitive is the project's NPV to a 10% change in sales? (Assuming sales affects COGS but doesn't affect NWC) (3) How sensitive is the project's NPV to a 10% change in COGS