For the hydrogen emission spectrum,the energy change $E$ (in Joules) is given by $\Delta E = 2.18 \times 10^{-18} \left( \frac{1}{n_1^2} - \frac{1}{n_2^2} \right) \ J$,where $n_1 = 1, 2, 3, \dots$ and $n_2 = 2, 3, 4, \dots$. Which of the following corresponds to the Paschen series?

• A
  $n_1 = 1$ and $n_2 = 2, 3, 4, \dots$
• B
  $n_1 = 3$ and $n_2 = 4, 5, 6, \dots$
• C
  $n_1 = 1$ and $n_2 = 3, 4, 5, \dots$
• D
  $n_1 = 2$ and $n_2 = 3, 4, 5, \dots$