A firm has the following investment alternatives:(6 pts total)

Cash Inflows

YearABC

1$400$---$---

2400400---

3400800---

44008001,800

Each investment costs $1,400 and the firm's cost of capital is 10 percent.

1. What is each investment's internal rate of return?(2 pts)
2. Should the firm make any of these investments based on IRR?(1 pt.)
3. What is each investment's net present value?(2 pts)
4. Should the firm make any of these investments based on NPV?(1 pt.)