Correct statements among the following 

A solution of $PbC{l}_2$   in HCl contains $P{b}^{+2}$   and  $C{l}^{-}$  ions

The reaction of  $P{b}_3{O}_4$ with hot dil  $HN{O}_3$  to give  $Pb{O}_2$  as a redox reactions.

$SnC{l}_2.2H_{2}O$   is a reducing agent

$Sn{O}_2$  reacts with KOH to form  $K_2\left[Sn{\left(OH\right)}_6\right]$