A CFO of a start-up company is evaluating the timing of a significant capital expenditure. He was previously at a mature company that used a discount rate of 8% so he used the same rate at the start-up company. Which of the following would be impacted if the discount rate were raised to reflect the risk of the start-up company?

a) Internal rate of return

b) Payback period

c) Return on investment

d) Net present value