求助GWD1-30!!

gufeizj

The ancient Anasazi harvested such native desert vegetation as the purple-flowered bee plant, what they now commonly call wild spinach in northern Arizona and other parts of the southwestern United States.
A.    what they now commonly call
B.    a plant that they now commonly call
C.    now commonly called
D.    and is mow commonly called
E.    which it is now commonly called
为什么不选E呢？？？

jj449

which指代plant，it指代plant，不重复了么~~

beef

选什么啊？

beef

C吗？