Two sisters each open IRAs in 2011 and plan to invest $4,000 per month for the next 10 years. Mary makes her first deposit on January 1, 2011 and will make all future deposits on the first day of the month. Jane makes her first deposit on December 31, 2011 and will continue to make her annual deposits on the last day of each month. At the end of 10 years, the difference in the value of the IRAs (rounded to the nearest dollar), assuming an interest rate of 7% per year, will be: Hint: since the payment is made per month change "N" and I/Y" on a month basis $19,837 $12,456 $5,300. $4038.65