Under hydroglytic conditions , the compounds used for prepareation of linera polymer and for chain termination respectively are .
A. `CH_3SiCl_3` and `Si(CH_3)_4`
B. `(CH_3)_2SiCl_2` and `(CJ_3)_3SiCl`
C. `(CH_3)_2siCl_2` and `CH_3SiCl_3`
D. `SiCl_4` and `(CH_3)_3 SiCl`