Savannah deposits $172.00 each month into a savings account that earns annual simple interest of 1.7% on the current principal balance of $3,340.00. In four years, what will the difference be between the balance at the current savings amount versus adding an additional $80.00 each month? (2 points)
$3,150.00
$2,820.00
$3,470.00
$3,840.00