The owner of a hair salon spends $1,000,000 to renovate its premises, estimating that this will increase her cash flow by $220,000 per year. She constructs the following graph, which shows the net present value (NPV) as a function of the discount rate. Which of the following discount rates best approximate the internal rate of return? A. 3.0% B. 3.3% C. 4.0% D. 4.8%