${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CO}}_2\mathrm{H} \underset{\mathrm{\Delta }}{\stackrel{{\mathrm{NH}}_3}{⟶}} \mathrm{X}\stackrel{ }{\underset{△}{\overset{{\mathrm{OH}}^{-}}{\to }}}\mathrm{Y}.$ What are X and Y ? 
 

	X	Y
1	${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CONH}}_2$	${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2{\mathrm{CO}}_2\mathrm{H}$
2	${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NH}}_2$	${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CO}}_2\mathrm{H}$
3	${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CONH}}_2$	${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CO}}_2\mathrm{H}$
4	${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CN}$	${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CONH}}_2$