What is the major product expected from the following reaction
`CH_(3)-C-=C-Hunderset(NH_(3))overset(NaNH_(2))to`
A. `CH_(3)-C-=overset(ө)(CN)overset(o+)(a)`
B. `H-C-=C-overset(ө)(C)H_(2)Noverset(o+)(a)`
C. `CH_(3)-overset(NH_(2))overset(|)(C)=CH_(2)`
D. `H_(2)N-CH_(2)-C-=C-H`
