月饼是中国传统的节日食品，随着生活水平的提高，人们对中秋月饼的消费日益多样。除枣泥、豆沙等传统月饼外，消费者也开始购买海鲜、木瓜、冰激凌等新式月饼。多样化的月饼消费：  [ ]

A．取决于月饼消费观念的多样化

B．导致了月饼消费结构

C．促进了月饼生产的多样化

D．促进了月饼质量的提高

--Mr. Li, I found a watch on the playground.

--You should try to find out _________

A. whose is the watch     

B. who is the owner of the watch

C. whom does the watch belong to