Which of the following oxoacids of sulphur has an $-O-O-$ linkage?

Choose the correct statements from the following:
$A$. All group $16$ elements form oxides of general formula $EO_2$ and $EO_3$ where $E=S, Se, Te$ and $Po$. Both the types of oxides are acidic in nature.
$B$. $TeO_2$ is an oxidising agent while $SO_2$ is reducing in nature.
$C$. The reducing property decreases from $H_2S$ to $H_2Te$ down the group.
$D$. The ozone molecule contains six lone pairs of electrons.
Choose the correct answer from the options given below:

Which of the following properties is $NOT$ true for ozone $(O_3)$?

Which one of the following statements is not correct?

Name the gas that can readily decolourise acidified $KMnO_4$ solution.

Which of the following elements exhibits the highest property of catenation?