an organic compound (A) contains 69.77% C , 11.63% H and the rest is oxygen .. the molecular mass of the compound is 86. it does not reduce tollens reagebt but forms an additon product (B) with NaHSO_​3and gives a positive iodoform test .on vigorous oxidation it gives ethanoic acid and propanoic acid . write the structures of A and B . also what happens when A reacts with MeMgBr followed by H₃O⁺ .