A、Give them to the audience as gifts. B、Send them to the kindergarten. C、Throw them as rubbish. D、Donate them to charity. D新闻中提到

　　It is exciting enough to score a goal in a hockey (冰球) game. But it is another thing to trigger a cascade of 28 thousand teddy bears from the stands onto the ice. (3)That is what happened when Jordy Stallard scored a goal for the Calgary Hitmen hockey team in early December. When the puck entered the net, all those teddy bears flew from the stands onto the rink (滑冰场). Stallard’s goal came on Teddy Bear Toss night against the Swift Current Broncos. The toss is a tradition for Canadian minor league hockey teams like the Hitmen. (4)All the bears are collected and donated to charity. The cascade of bears caused a 37-minute delay as players celebrated and rink attendants gathered up the toys. There were almost 20 000 fans at the game, and they threw 28 815 bears, which broke the record from 2007.
　　3. When did the fans begin to throw teddy bears?
　　4. How do people deal with the teddy bears thrown by fans?