Which one of the following deposit plans will produce the highest savings back-up to buy an investment property for $500,000 after 4 years from today?

(a) Deposit today $300,000 for which bank will provide 12% interest, compounded monthly

(b) Deposit $90,000 at the end of each year where the bank will pay 14% interest;

(c) Deposit $80,000 at the beginning of each year where the bank will pay 15% interest;

(d) Deposit $7,500 at the end of each month where the bank will pay 15% interest;