Please include formula

ABC is considering an investment project that has the following cash flows: CF0=$1,000;CF1=400;CF2=300;CF3=500;CF4=400 The company's cost of capital is 10 percent. What is the project's discounted payback, internal rate of return (IRR), and net present value (NPV)? Discounted Payback =2.60,IRR=10.00%,NPV=$300 Discounted Payback =3.05,IRR=21.22%,NPV=$300 Discounted Payback =3.05,IRR=21.22%,NPV=$260 Discounted Payback =2.60,IRR=21.22%,NPV=$260