Please explain how to calculate for a,b, and c. Thanks.

Initial cost: $210,000 Cash flow year one: $27,000 Cash flow year two: $79,000 Cash flow year three: $160,000 Cash flow year four: $160,000 Net present value. Quark Industries has a project with the following projected cash flows: a. Using a discount rate of 11% for this project and the NPV model, determine whether the company should accept or reject this project. b. Should the company accept or reject it using a discount rate of 13% ? c. Should the company accept or reject it using a discount rate of 18% ? a. Using a discount rate of 11%, this project should be (Select from the drop-down menu.)