A Hydrogen Atom Makes a Downward Transition from the N

Multiple Choice

A hydrogen atom makes a downward transition from the n = 20 state to the n = 5 state. Find the wavelength of the emitted photon. The lowest level energy state of hydrogen is -13.6 eV.
(h = 6.626 × 10^-34 J ∙ s, 1 eV = 1.60 × 10^-19 J, c = 3.00 × 10⁸ m/s)

A) 2.43 μm
B) 1.46 μm
C) 1.94 μm
D) 2.92 μm