Which of the following does not give nitroalkane?

 When ${\mathrm{CH}}_3-\mathrm{N}\left({\mathrm{CH}}_3\right)-{\mathrm{CH}}_3$ reacts with ${\mathrm{KMnO}}_4$, nitroalkane is not formed as tertiary amines are not oxidized by potassium permanganate. The rest of the reactions given in the reactions give nitroalkane as one of the products.

${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{I}+$ alc. $\stackrel{{\mathrm{AgNO}}_2}{\to }{\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{NO}}_2$

${\mathrm{CH}}_3-{\mathrm{CH}}_3$ fuming of $\stackrel{\mathrm{fuming} \mathrm{of}{\mathrm{HNO}}_3}{\to }{\mathrm{CH}}_3-{\mathrm{CH}}_3-{\mathrm{NO}}_2$.