Phenol is heated with $\mathrm{NaOH}$ and $\mathrm{CO}{}_2$ at 400 K and 5 atm, and then acidified to give A. A is warmed with ethanoic anhydride in the presence of a trace of acid to give B. B is

1. Amethyl 2-hydroxybenzoate, which gives a violet colour with neutral $\mathrm{FeCl}{}_3$
2. B2-acetoxybenzoic acid (aspirin), which gives no violet colour with neutral $\mathrm{FeCl}{}_3$ and liberates $\mathrm{CO}{}_2$ from $\mathrm{NaHCO}{}_3$
3. C4-acetoxybenzoic acid, which gives a violet colour with neutral $\mathrm{FeCl}{}_3$
4. Dphenyl ethanoate, which liberates $\mathrm{CO}{}_2$ from $\mathrm{NaHCO}{}_3$