The ratio of radii of the first three Bohr's orbits is

The energy level diagram for a hydrogen-like atom is shown in the figure. The radius of its first Bohr orbit is

Energy levels $A$, $B$, $C$  of a certain atom corresponding to increasing values of energy, i.e., $E_A<E_B<E_C$. If ${\lambda }_1$, ${\lambda }_2$ and ${\lambda }_3$ are the wavelengths of radiations corresponding to the transitions $C$ to $B$, $B$ to $A$ and $C$ to $A$ respectively, which of the following statements is correct

In the figure, six lines of emission spectrum are shown. Which of them will be absent in the absorption spectrum?