Which of the following amines will react with nitrous acid to give nitrogen?

What is the major product $\mathrm{P}$ in the following reaction? 

${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{NH}}_2\underset{0°\mathrm{C}}{\overset{{\mathrm{NaNO}}_2/\mathrm{HCl}}{\to }}\mathrm{P}$

Which of the following reagents will be used to distinguish between the above?

$\underset{\mathrm{Optically} \mathrm{active}}{\mathrm{X}\left({\mathrm{C}}_5{\mathrm{H}}_{13}\mathrm{N}\right)}\stackrel{{\mathrm{NaNO}}_2/\mathrm{HCl}}{\to }\underset{\left(\mathrm{major}\right)}{\mathrm{Y}\left(3^{\circ } \mathrm{alcohol}\right)}$

Which of the following is incorrect about the above reaction?