For the given cash flows, suppose the firm uses the NPV decision rule. Year Cash Flow 0 $ 149,000 O 1 67,000 72,000 N 56,000 w a. At a required return of 8 percent, what is the NPV of the project? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) b. At a required return of 21 percent, what is the NPV of the project? (A negative answer should be indicated by a minus sign. Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) NPV b. NPV