`PCl_5` has trigonal pyramidal geometry with `sp^3 d` hybridisation in gases and liquid state but in solid state it exist as ionic compound.
In presence of small amount of water, `PCl_5` hydrolysis to form.
A. `PCl_3`
B. `H_3 PO_3`
C. `POCl_3`
D. `POCl`