Consider the above reaction and identify the Product P :

Consider the above reaction, the major product 'P' is :

Which of the following compounds will provide a tertiary alcohol or reaction with excess of CH₃MgBr followed by hydrolysis?

An organic compound A (C₆H₆O) gives dark green colouration with ferric chloride. On treatment with CHCl₃ 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.