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(A) $CH_{3}NC + 4[H] \xrightarrow{LiAlH_{4}} CH_{3}NHCH_{3}$$CH_{3}NC$ (Methyl isocyanide) on reduction with lithium aluminium hydride $(LiAlH_{4})$ y

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Methyl isocyanide

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(A) $CH_{3}NC + 4[H] \xrightarrow{LiAlH_{4}} CH_{3}NHCH_{3}$$CH_{3}NC$ (Methyl isocyanide) on reduction with lithium aluminium hydride $(LiAlH_{4})$ yields $CH_{3}NHCH_{3}$ (Dimethylamine),which is a secondary $(2^{\circ})$ amine.In contrast,reduction of alkyl cyanides $(RCN)$ with $LiAlH_{4}$ yields primary $(1^{\circ})$ amines $(RCH_{2}NH_{2})$.Reduction of acetamide $(CH_{3}CONH_{2})$ yields ethylamine $(CH_{3}CH_{2}NH_{2})$,a primary amine.Reduction of nitroethane $(CH_{3}CH_{2}NO_{2})$ yields ethylamine $(CH_{3}CH_{2}NH_{2})$,a primary amine.

Which one of the following on reduction with lithium aluminium hydride yields a secondary amine?

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