Which of the following does not give nitroalkane?

Question

$\begin{array}{1 1} CH_3-N-CH_3 \quad \underrightarrow{Kmno_4}\\ C_2H_5I \quad \underrightarrow{alc.AgNO_2} \\ CH_3CH_3 \quad \underrightarrow {Fuming HNO_3} \\none\;of\;these \end{array}$