阅读下列短文，从每题所给的A、B、C和D项中，选出最佳选项。

                                                                              Musicians wanted

      We want four good musicians for our rock band(摇滚乐队). Are you a musician? Can you sing? Can you play the piano, the guitar or the drums? Do you want to be the best musician? If you want to join us, please send(发送) an e-mail. Our e-mail address is rockband2009 @pep.com.cn. Or you can call Mr. Liu at 790-4566.

                                                                             Teachers needed

      Are you an art te acher? Can you paint (绘画) or draw well? Are you good with kids? We need two teachers for our art club. Please find Mrs Wang for more information(信息) or call 628-1183.

小刚、小明、小宇同时拿着水桶到水龙头前接水，水龙头注满小刚的桶要6分钟，注满小明的桶需要10分钟，注满小宇的桶需要8分钟，（____  ）注水等待的时间和最小，三人都注满水，等待时间至少共需要（____  ）分钟