The last four teams in this year's league finals are A. B, C and D. Among them, N and T are the head coaches of Team A and D respectively. It has been pointed out that Team A has won every previous season that won the championship. Coach T's team; under the guidance of Coach N, the D team has won the championship every other year for the past 4 years, but the D team did not win the championship last year. Which of the following, if true, contradicts the above statement? ['ch A. T may have coached the D team.', 'ch B. N coached the team last year.', 'Team A won the championship 4 times.', 'The D team did not win the championship the year before.']