`CH_(3)-underset(O)underset(||)(C)-CH_(3)+underset(("semicarbazide"))(NH_(2)-underset(O)underset(||)(C)-NH-NH_(2)overset(H^(o+))(to)`
major product is
A. `CH_(3)-underset(O)underset(||)(C)-CH=underset(NH_(2))underset(|)(C)-NH-NH_(2)`
B. `CH_(3)-underset(CH_(3))underset(|)(C)=N-NHunderset(O)underset(||)(C)-NH_(2)`
C. `CH_(3)-underset(CH_(3))underset(|)(C)=N-underset(O)underset(||)(C)-NH-NH_(2)`
D.