Callie took out a loan for $$7,000$ to purchase a car. The loan must be repaid at the end of six years in one payment with an interest of $6\%.$ The total amount Callie has to pay back at the end of the loan is A$.$ $$9,930.$ B$.$ $$7,900.$ C$.$ $$9,180.$ D$.$ $$9,700.$