The 2008 olympic mascot were the olympic flame,the fish,the

The 2008 olympic mascot were the olympic flame,the fish,the panda,the tibetan···高三英语题
The 2008 olympic mascot were the olympic flame,the fish,the panda,the tibetan antelope and the swallow（B）a group of close friends.
A.to reprenst B.representing
为什么不选A?不是表目的用to么?