In The $n = 1$ State, the Energy of the Hydrogen Atom Is

In the $n = 1$ state, the energy of the hydrogen atom is $- 13.6 \mathrm { eV }$ . What is its energy in the $n = 2$ state?

A) $- 6.79 \mathrm { eV }$
B) $- 4.53 \mathrm { eV }$
C) $- 1.51 \mathrm { eV }$
D) $- 3.40 \mathrm { eV }$