咖啡生产厂商于茶叶生产厂商之间属于（）的关系。

A、愿望竞争者

B、一般竞争者

C、产品形式竞争者

D、品牌竞争者

—Did you see the basketball match yesterday?

—Yes, but it __________ when I _________ to the playground.[ ]

A. began; got        

B. had begun; had got

C. began; had got    

D. had begun; got