Statement -1 : Number of possible spectral lines when electrons jump from $\text{'}\mathrm{n}\text{'} \mathrm{to} \text{'}1\text{'}$ are $\frac{\mathrm{n}(\mathrm{n}-1)}{2}$.

Statement -2 : In the spectrum of $\mathrm{H}$-atoms if number of spectral lines observed are $\text{'}6\text{'}$ then maximum energy level in which electron is present is four $(\mathrm{n}=4)$.

Statement-1 is false, statement-2 is true.

Statement-1 is true, statement-2 is false.

Statement-1 is true, statement-2 is true and statement-2 is NOT the correct explanation for statement-1.

Statement-1 is true, statement-2 is true and statement-2 is correct explanation for statement-1.