Your mom is thinking of retiring. Her retirement plan will pay her either $300,000 immediately on retirement or $420,000 five years after the date of her retirement. Which alternative should she choose if the interest rate is: a. 0% per year? b. 8% per year? c. 20% per year? a. 0% per year? If the interest rate is 0% per year, the PV of the amount to be received five years after retirement is $. (Round to the nearest dollar.) Which alternative should your mom take in this case? (Select the best choice below.)