An Organic compound (A) with molecular formula C3H7‌NO on heating with Br2 and KOH forms a compound (B). Compound (B) on heating with CHCl3 and alcoholic KOH produces a foul smelling compound (C) and on reacting with C6H5SO2‌Cl forms a compound (D) which is soluble in alkali. Write the structure of (A), (B), (C) and (D).