Identify an aromatic compound A $\left(C_7{H}_{8}O\right)$ which gives the following tests with the given reagents

O-, m-, and p-cresol all have the phenolic group as a result, they produce violet coloring when combined with $FeC{l}_3$. However, benzyl alcohol and methyl phenyl ether do not; as a result, they do not produce coloration when combined with $FeC{l}_3$.

Therefore, o-cresol and benzyl alcohol are the two substances that may be distinguished by $FeC{l}_3$. 

Hence, the correct option  (B).