Which transition in the hydrogen atom results in emitted light with the
longest wavelength?
$$\begin{array}{ll}{\text { a. }} & {n=4 \longrightarrow n=3} \\ {\text { b. }} & {n=2 \longrightarrow n=1} \\ {\text { c. }} & {n=3 \longrightarrow n=2}\end{array}$$
