The owner of a har salen spends $1,000,000 to renovate its premises, estimating that this will increase her cash flow by $220,000 par yeac. she constructs the above graph, which shows the ret present value (NPM) as a function of the dinoount rate. N what discount rede does har decision lo renovate become unienable? A. 4.8% B. 4.0% C. 3.0% D. 3.3%