In reaction C6H5CH3 ⟶Oxidation A ⟶NaOH BSodalime−−−−−→ C Then 'C' is
a) C6H5CH3 [O]−→ C6H5COOH[A] NaOH−−−−→ C6H5COONa[B] NaOH/CaO−−−−−−−→C6H6[C]