请教大全232

1.        Dance fans knew Tamara Geva as a soloist in several Ballanchine works, a dancer who introduced his choreography to the United States, and as a star in Broadway theater.

(A) a dancer who introduced

(B) as a dancer which introduced

(C) the dancer to introduce

(D) who introduced（E）

(E) as the dancer who introduced

为什么不选B呢？前面不是也是 "a soloist”， “a star”么？？？

老是忘记这一条。。。