An organic compound having mol. Mass 60 is found to contain C=20% and H=6.67% and N=46.67% while the rest is Oxygen. On heating it gives NH3 alongside solid residue. The solid residue gives violet color with alkaline CuSO4 solution. The compund is
A.(NH2)2CO
B. CH3CH2CONH2
C. CH3NCO
D.CH3CONH2
