关于冰球运动的比赛方法，说法正确的是（   ）。
The correct statement about the game method of hockey is (    ) .
A、一般冰球比赛每队有20人，双方各上场6人
A typical hockey game has 20 players per team, with 6 players on each side of the ice
B、每场比赛60分钟，分3局进行，每局实际比赛20分钟，每局中间休息 15 分钟
Each game is 60 minutes long and is played in 3 innings, with 20 minutes of actual play per inning and a 15-minute break in between each inning
C、如果第三节比赛两队打平，要打5分钟加时赛
If the game is tied in the third period, a 5-minute overtime period is played
D、比赛进行中可以不通过裁判随时换组、替换队员和守门员
The team can change teams, players and goalkeepers at any time during the game without the referee