A compound (X) has the molecular formula ` C_3 H_7 NO` . With ` Br_2` and ` KOH`, (X) gives (Y) . (Y) responds to mustard oil reaction . (Y) upon treatment with ` HNO_2` evolves `N_2` and gives an alcohol (Z) which gives iodoform test , (X) is likelty to be :
A. `C_2H_5CONH_2`
B. `CH_3COHH_2`
C. `CH_3COONH_4`
D. `C_2H_5CNO`