An ester A(C 4 H 8 O 2 ), on treatment with excess methyl magnesium chloride followed by acidification, gives an alcohol B as the sole organic product. Alcohol B, on oxidation with NaOCl followed by acidification, gives acetic acid. Ester A is:

Question

An ester A(C 4 H 8 O 2 ), on treatment with excess methyl magnesium chloride followed by acidification,…