The correct option is A ethylamine
Methylcyanide on reaction with sodium and ethonol forms ethylamine.
CH3−C≡N+4[H]Na/ ethanol−−−−−−−→CH3−CH2−NH2
In this reaction, the nitrile group is hydrogenated to form a primary amine. This is a useful method to increase the length of a carbon chain in preparing a primary amine which contains one more carbon atom than the alkyl halide from which alkyl cyanide is obtained.