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

        CH3—Br→Mg/etherA→(ii)Water(i)CO2B→∆CH3OH/H+C


Complete chemical conversion can be done as
CH3-BrBromomethane→Mg/etherCH3MgBrAMethylmagnesiumbromide→iiWateriCO2CH3COOHBEthanoicacid→CH3OH/H+CH3COOCH3CMethylethanoate
Hence,A=CH3MgBr,B=CH3COOH,
C=