You have just earned an A+ on pe final examination and graduated with the highest honors. Now that you are working for a living, you have decided to open a savings account. The account is expected to pay a 10% nominal annual interest rate, compounded quarterly, and you wish to save $250,000 at the end of 20 years. Calculate the payments to be made if they are to be equal and paid at a. the end of each quarter b. the end of each month c. the end of each year d. the beginning of each year