Which one of the following relationship is correct

The kinetic gas equation is given as

$\mathrm{consider} \mathrm{PV}=\frac{1}{3}{\mathrm{mnc}}^2,\left(\mathrm{n}=\mathrm{N}\right)$

$\mathrm{PV}=\frac{1}{3}{\mathrm{mNC}}^2$

$\mathrm{PV}=\frac{1}{3}{\mathrm{MC}}^2 \left(\mathrm{Since} ,\mathrm{M}=\mathrm{m}\times \mathrm{N}\right)$

$\Rightarrow \mathrm{PV}=\frac{2}{3}\times \frac{1}{2}{\mathrm{MC}}^2$

$\mathrm{PV}=\frac{2}{3}\mathrm{K}.\mathrm{E} \left(\mathrm{Since} \mathrm{K}.\mathrm{E} =\frac{1}{2}{\mathrm{MC}}^2\right)$

$\mathrm{PV}=\frac{2}{3}\mathrm{K}.\mathrm{T} \mathrm{we} \mathrm{know} \mathrm{that} \mathrm{K}.\mathrm{E\alpha T} \mathrm{and} \mathrm{K}.\mathrm{E}=\mathrm{K}.\mathrm{T}$$\frac{\mathrm{PV}}{\mathrm{T}}=\frac{2}{3}K$