The reactions of `CI_(2)` gas with cold-dilute and hot-concentrated NaOH in water give sodium salts of two different oxioacids of chlorine, P and Q, respectively. The `CI_(2)` gas reacts with `SO_(2)` gas, in presence of charocal, to give a product R reacts with white phosphorus to give a compound S. On hydrolysis, S gives an oxoacid of phosphorus.
R, S and T, respectively, are
A. `SO_2Cl_2 , PCl_5` and `H_3PO_4`
B. `SO_2Cl_2, PCl_3` and `H_3PO_3`
C. `SOCl_2 , PCl_3` and `H_3PO_2`
D. `SOCl_2 , PCl_5` and `H_3PO_5`
