Conners,a publishing and media services company,is acquiring

Conners,a publishing and media services company,is acquiring "Dispatch Education,it manufactures" school uniforms.
引号部分为画线部分
B.Dispatch Education,which manufactures
C.Dispatch Education,manufacturing
可是B选项中的“which“不就修饰“Dispatch Education"了吗?我觉得 C选项更合适,“manufacturing” 修饰“Conners” （因为语法：“subject+verb+object,doing ”中doing修饰主语subject),