Please solve without using excel if possible! Thank you so much :)

Kaimalino Properties (KP) is evaluating six real estate investments. Management plans to buy the properties today and sell them five years from today. The following table summarizes the initial cost and the expected sale price for each property, as well as the appropriate discount rate based on the risk of each venture. (Click on the following icon KP has a total capital budget of $18,000,000 to invest in properties. a. What is the IRR of each investment? b. What is the NPV of each investment? c. Given its budget of $18,000,000, which properties should KP choose? d. Explain why the profitability index method could not be used if KP's budget were $12,000,000 instead. Which properties should KP choose in this case