$\require{mhchem}\ce{HgCl2}$ and $\ce{I2}$ both when dissolved in water containing $\ce{I-}$ ions, the pair of species formed is
(a) $\ce{HgI2,\ I-}$
(b) $\ce{HgI4^{2-},\ I3-}$
(c) $\ce{Hg2I2,\ I-}$
(d) $\ce{HgI2,\ I3-}$
(a) $\ce{HgI2,\ I-}$
(b) $\ce{HgI4^{2-},\ I3-}$
(c) $\ce{Hg2I2,\ I-}$
(d) $\ce{HgI2,\ I3-}$