How much work must be done to pull apart the electron and the proton that make up the Hydrogen atom, if the atom is initially in the state with `n = 2` ?
A. `13.6 xx 1.6 xx 10^(-19) J`
B. `3.4 xx 1.6 xx 10^(-19) J`
C. `1.51 xx 1.6 xx 10^(-19) J`
D. 0