A、c<sub>0sub>,(a<sub>0sub>+b<sub>0sub>+c<sub>0sub>),(a<sub>0sub>+b<sub>0sub>) B、(a<sub>0sub>+b<sub>0sub>+c<sub>0sub>),(a<sub>0sub>+b<sub>0sub>),c<sub>0sub> C、(a<sub>0sub>+b<sub>0sub>),c<sub>0sub>,(a0+b0+c0) D、c<sub>0sub>,(a<sub>0sub>+b<sub>0sub>),(a<sub>0sub>+b<sub>0sub>+c<sub>0sub>)