Members of the Beijing Wheelchair Dance Training Base, was set up in 2009, are able to man

Members of the Beijing Wheelchair Dance Training Base, was set up in 2009, are able to manage their wheelchairs perfectly.
A. who
B. that
C. what
D. which

A. whoB. thatC. what(答案→)D. which解析：考查非限制性定语从句，句意：成立于2009年的北京轮椅舞蹈训练中心的成员能够适当的操作他们的轮椅。先行词是the Beijing Wheelchair Dance Training Base，定语从句中没有主语，又因为是非限制性定语从句，不能用that，只能用which引导定语从句，选D。

我也是这个答案