Which one of the following transition have minimum wavelength?

$\because \mathrm{E}=\frac{\mathrm{hc}}{\mathrm{\lambda }}$
$\therefore \mathrm{E}\propto \frac{1}{\mathrm{\lambda }}$
$\therefore$Decrease in wavelength, increases the energy. Energy difference in ${\mathrm{n}}_4\to {\mathrm{n}}_1$transition is maximum
$\therefore {\mathrm{n}}_4\to {\mathrm{n}}_1$transition has minimum wavelength