Correct Answer - A
Phenol does not react with `NaHCO_(3)` whereas benzoic acid will react to form sodium salt which can be hydrolysed to get benzoic acid back.
(b) Both will react with NaOH, therefore `NAOH` cannot be used for separation.
(c ) Phenol forms complex with `FeCl_(3)` from which phenol cannot be recovered, therefore cannot be used.
(d ) is not possible,
