Help with all questions. Can you also show work please?!

16. Today, you are borrowing $7,800 to purchase a car. What will be your monthly payment if the loan is for four years at 6.45 percent interest? A. $208.40 B. $221.50 C. $184.80 D. $180.24 E. $200.10 17. What condition must exist if a bond's coupon rate is equal to the bond's yield to maturity? Assume the market rate of interest for this bond is positive. A. The clean price of the bond must equal the bond's dirty price. B. The par value must exceed the market price. C. The market price must exceed the par value. D. The bond must be priced at par E. There is no condition under which this can occur