Which of the following statements is / are correct for polythionic acid series?

The average oxidation state of $\mathrm{S}$-atom increases with decrease in number of $\mathrm{S}$-atoms.

The absolute oxidation state of $\mathrm{S}$-atom increases with decrease number of $\mathrm{S}$-atom.

The average oxidation state of $\mathrm{S}$-atom decreases with increase in number of $\mathrm{S}$-atom.

The absolute oxidation state of $\mathrm{S}$-atom remains same with increase or decrease in number of $\mathrm{S}$-atom.