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An organic compound (A) having molecular formula C9H10O forms orange-red ppt (B) with the 2,4-DNP reagent. Compound (A) gives yellow ppt (C) when heated in the presence of iodine and NaOH along with a colorless compound (D). (A) does not reduce Tollen's reagent or Fehling's solution nor does it decolorize the Br2 water. On drastic oxidation of (A) with chromic acid, carboxylic acid (E) of molecular formula C7H6O2 is formed. Identify A to E

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