$$OpenSeas$,$ Inc. is evaluating the purchase of a new cruise ship. The ship will cost $ $504$ million and will operate for $20$ years. OpenSeas expects annual cash flows from operating the ship to be $ $71\mathrm{.}9$ million and its cost of capital is $12\mathrm{.}4\%.$ a$.$ The NPV for a discount rate of $2\mathrm{.}0\%$ is $$$ enter your response here million. $($Round to one decimal$$ place.$)$ b$.$ Identify and plot the IRR on the graph. c$.$ should open seas go ahead with the purchase of the ship?. d$.$ How far off could$$ OpenSeas's cost of capital estimate be before your purchase decision would$$ change?