\(\mathrm{PbCl}_{2}\) is insoluble in cold water. Addition of \(\mathrm{HCl}\) increases its solubility due to
(A) Formation of soluble complex anions like [PbC]
(B) Oxidation of \(\mathrm{Pb}(\mathrm{II})\) to \(\mathrm{Pb}\) (IV)
(C) Formation of \(\left[\mathrm{Pb}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}\)
(D) Formation of polymeric lead complexes