Wayne's credit card has an APR of 12.39% and a grace period of 19 days, and Wayne pays his balance in full every month. If his last billing cycle ended on May 29, 2010, and he made his payment on June 14, 2010, did he owe any interest on his last statement's balance? A. No, because he paid within the grace period. B. No, because he didn't pay within the grace period. C. Yes, because he didn't pay within the grace period. D. Yes, because he paid within the grace period.