Hydrogen $\left({}_{1}H^{1}\right)$, Deuterium $\left({}_{1}H^{2}\right)$, singly ionised Helium ${\left({}_{2}H{e}^{4}\right)}^{+}$ and doubly ionised lithium ${\left({}_{3}L{i}^{6}\right)}^{++}$ all have one electron around  the nucleus. Consider an electron transition from n = 2 to n = 1. If the wave lengths of emitted radiation are  and ${\lambda }_{4}$ respectively then approximately which one of the following is correct [JEE (Main) 2014]

(1) $4{\lambda }_{1}=2{\lambda }_{2}=2{\lambda }_{3}={\lambda }_{4}$                  (2) ${\lambda }_{1}=2{\lambda }_{2}=2{\lambda }_{3}={\lambda }_{4}$

(3) ${\lambda }_{1}={\lambda }_{2}=4{\lambda }_{3}=9{\lambda }_{4}$                    (4) ${\lambda }_{1}=2{\lambda }_{2}=3{\lambda }_{3}={\lambda }_{4}$