Identify the product 'B' in the following reaction.
\(\begin{equation} \text { Cumene } \xrightarrow[\Delta]{\mathrm{KMnO}_4 \cdot \mathrm{KOH}} \mathbf{A} \xrightarrow{\mathrm{H}_3 \mathrm{O}^{+}} \mathbf{B} \end{equation}\)
1
Phenol
2
Potassium benzoate
3
Benzoic acid
4
Aniline
5
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