Identify the compounds A, B and Cin the following reaction.

        CH3BrMg/etherA(ii)Water(i)CO2BCH3OH/H+C


Complete chemical conversion can be done as
CH3-BrBromomethaneMg/etherCH3MgBrAMethylmagnesiumbromideiiWateriCO2CH3COOHBEthanoicacidCH3OH/H+CH3COOCH3CMethylethanoate
Hence,A=CH3MgBr,B=CH3COOH,
C=