Jose wants to be sure he maintains a high credit score as he is planning to buy a new car soon. What should he do to ensure his score stays high, allowing him to buy his dream car? 
 A.Test drive several cars before deciding which to buy.
 B.Open a savings account at the local bank.
 C.Pay off his credit card balance each month.
 D.All are things he should do to increase or maintain his credit score.