An organic compound A ( C_6 H_6 O ) gives dark green colouration with ferric chloride. On treatment with CHCl_3 and KOH, followed by acidification…

An organic compound $\displaystyle \mathrm{A}\left(\mathrm{C}_6 \mathrm{H}_6 \mathrm{O}\right)$ gives dark green colouration with ferric chloride. On treatment with $\displaystyle \mathrm{CHCl}_3$ and KOH , followed by acidification gives compound B . Compound B can also be obtained from compound C on reaction with pyridinium chlorochromate (PCC). Identify A, B and C.