A firm evaluates all of its projects by using the NPV decision rule. Year 0 1 2 3 Cash Flow -$ 29,000 20,000 14,000 9,000 0:30 a. At a required return of 16 percent, what is the NPV for this project? NPV $ 4,412 $ 4,632 $ 4,235 $ 4,500 $ 4,323 y b. At a required return of 33 percent, what is the NPV for this project? NPV $-2,333.51 $-2,133.49 $-2,266.84 $-2,177.94 $-2,222.39