Pretty please help!(:

Elbert purchased a living room set for $5,021 using a 12-month deferred payment plan. The interest rate after the introductory period is 15.60%. A down payment of $375 is required as well as a minimum monthly payment of $122. What is the balance after the introductory period if only the minimum payment is made until then?

$4,023.78
$3,960.91
$5,302.91
$5,424.91