rivendell one llc is offering two savings options to middle-earth citizens. option a is to save $1,000, $1,500, $2,000, and $2,5000 at the end of each year for the next four years. option b is where you save one lump sum amount today. both options offer a 10 percent rate of return. if you want to have the same balance in your savings account at the end of the four years, regardless of the savings method you select, how much do you need to save today if you select the lump sum option? round to the nearest dollar