Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. It is the largest of the three NCAA divisions'' championships, with the most complicated selection process. The tournament is a 57-team, single-elimination tournament. Teams are divided into three pools. Pool A consists of the 36 conference champions, who all receive automatic bids to the tournament. Pool B consists of all teams which are not in conferences or are in conferences which do not meet the requirements to be awarded an automatic bid. Four teams are selected from Pool B. Pool C consists of all the other teams, plus those Pool B teams not already selected. 17 teams are selected from Pool C. The seven highest teams receive first round byes, and the rest of the bracket is filled by geographical proximity.