21. If CFO is -$155,555, CF1 and CF2 are both $65,000, CF3 is $76,000, CF4 is zero, CF5 and CF 6 and CF7 are $44,000 and CF 8 is zero, what happens if the discount rate is decreased: a. The NPV goes higher. b. There are multiple IRR's. c. The IRR goes way down. d. The NPV is zero by definition.