Reaction of iso-propylbenzene with $$O_2$$ followed by the treatment with $$H_3O^+$$ forms phenol and a by-product P. Reaction of P with 3 equivalents of $$Cl_2$$ gives compound Q. Treatment of Q with $$Ca(OH)_2$$ produces compound R and calcium salt S.

The correct statement(s) regarding P, Q, R and S is(are)

A

Reaction of P with R in the presence of KOH followed by acidification gives

B

Reaction of R with $$O_2$$ in the presence of light gives phosgene gas

C

Q reacts with aqueous NaOH to produce $$Cl_3CCH_2OH$$ and $$Cl_3CCOONa$$

D

S on heating gives P